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    • Posted by Ruhani Arora 2 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Qazim Khan 2 years, 8 months ago

    It's a type of dormancy

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    • Posted by Ruhani Arora 2 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Qazim Khan 2 years, 8 months ago

    Osmosis >agr hum osmosis ki baat kry tou Osmosis usy kehty hai jis mai water molecules jo high concentration wala solution mai hoty hai ,vo transfer/movement krty hai low concentrations of solutions ki trf Diffusion>it is also like Osmosis but in this both the solvent as well as solute moves towards low concentrations .🙃

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    • Posted by Ruhani Arora 2 years, 8 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Anjan Karthi 2 years, 8 months ago

    Nah, jab chaho, thab puchcho.

    0Thank You

    Ruhani Arora 2 years, 8 months ago

    Thanks Adithya Dev for solving all my doubts

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    Anjan Karthi 2 years, 8 months ago

    Well, it is quite true that the extinction of colpa bees (if it occurs) would significantly affect the pollination rate of Ophrys orchid. Par bath aise bhi hai ki the flower's phytochemistry (used to attract pollinators) have been observed to be working on two other species of bees, but Colpa is the "jungal ka sher" to help in their pollination. So, the answer is, it can survive but very less individuals actually would thrive.

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    • Posted by Ruhani Arora 2 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Anjan Karthi 2 years, 8 months ago

    (a) Fig trees and pollinator species of wasp. (These are exclusively in mutualistic relationship with each other. This means that no other insect would pollinate fig pollens other than the wasp, or no other fruit could be a safe breeding ground for the wasp.) BUT, FUNGI HAS OTHER KINDS OF MUTUALISM WHICH THEY CAN USE WHEN ALGAE DOES NOT REMAIN ANYMORE. AND, SEA ANEMONE AND CLOWN FISH EXHIBIT COMMENSALISM, WHEREIN ONLY CLOWN FISH IS BENEFITTED (BECAUSE IT GETS SAFETY FROM PREDATORS). BUT, THAT DOES NOT MEAN IT IS THE ONLY WAY FOR THE SEA ANEMONE TO EXIST, THE LATTER CAN EXIST EVEN WITHOUT THE FISH.

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    • Posted by Ruhani Arora 2 years, 8 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Anjan Karthi 2 years, 8 months ago

    Heterotrophic and aerobic.

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    Mayank Chauhan 2 years, 8 months ago

    Autotrophic

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    • Posted by Ruhani Arora 2 years, 8 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Anjan Karthi 2 years, 8 months ago

    (c) Human excreta. [EXP - Sewage is wastewater having food residue, animal and human excreta and waste material from industrial establishments.Large quantities of waste water is generated in cities and towns. The major component of this waste water is human excreta. The domestic sewage in large cities is processed by aerobic and then anaerobic bacteria in the secondary treatment in sewage treatment plant (STP).]

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    • Posted by Ruhani Arora 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Anjan Karthi 2 years, 8 months ago

    Yes, it is a kind of mutualism. But, the bee seems to derive not much benefit from the relation. The bee is rather being deceived by the orchid petals into pollinating it's mature microspores by pseudo copulating with the petal.

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    Sakshi Gupta 2 years, 8 months ago

    Yes coral is a example of mutualism

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    • Posted by Ruhani Arora 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Preeti Dabral 2 years, 9 months ago

    They have certain biochemical adaptations like there is a method of ion exchange in there body, it is in such a way (exchange occurs with high pressure) that helps in minimizing the pressure difference between the body and the outside environment.

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    • Posted by Prateek Kashinath Yalameli Yalameli 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Preeti Dabral 2 years, 9 months ago

    The seminiferous tubules are the site of spermatogenesis where germ cells develop into spermatozoa in close interaction with Sertoli cells.

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    • Posted by Ruhani Arora 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Preeti Dabral 2 years, 9 months ago

    The micro-organisms essential for characteristic changes in the batter were identified and isolated. While there is a sequential shift in the bacterial flora, Leuconostoc mesenteroides was found to be the primary microorganism responsible for souring as well as gas production. So, Bacteria is the correct answer. 1. Lactobacillus is the prevalent bacteria known for dosa batter souring and leavening. So, Lactobacillus is an incorrect answer. 2. A virus is a microscopic level infectious agent which only replicates within an organism's living cells. So, the virus is an incorrect answer. 3. Yeast generated flavour, enzymes, and assisted in starch saccharification. So, yeast is an incorrect answer. Additional information: The Idli and Dosa are widely known fermented foods which originated in South India and have spread throughout the world. Both are extracted from the same batter, but every household in the south India prides itself on its idlis and keeps its variations close to them. Thus, the option A is the correct option. i.e. Bacteria Note: Bacteria alone or in association with yeasts is known to be involved for dosa fermentation— a food fermented by indigenous Indians.

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    • Posted by Ruhani Arora 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Preeti Dabral 2 years, 9 months ago

    3

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    Anjan Karthi 2 years, 8 months ago

    2. First is formed from unequal mitotic division of primary oocyte and second is formed by unequal meiotic division of secondary oocyte prior to fertilisation.

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    Sakshi Gupta 2 years, 8 months ago

    2

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    • Posted by Ruhani Arora 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Preeti Dabral 2 years, 9 months ago

    Kingdom fungi include mushrooms, yeast and moulds containing filamentous structures called hyphae.

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    • Posted by Shikhar Dubey 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Anjan Karthi 2 years, 9 months ago

    Uttarakhand and Himachal Pradesh

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    • Posted by Ruhani Arora 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Anjan Karthi 2 years, 9 months ago

    The flower uses nectar to attract pollinating animals and uses it as a reward for carrying out pollination. Nectar is also utilized by honeybees to produce honey. Bees can sense the electrical charge of the flower that possesses nectar. If a flower's nectar is already harvested, the positive electrical charge of the flower increases and the bees avoid such flowers. They can also detect nectar by the reflection of UV rays and by the tone of light that the flower emits to attract pollinators.

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    • Posted by Ruhani Arora 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Anjan Karthi 2 years, 9 months ago

    d) FSH and LH. (Prior to ovulation, the egg cell is developed from oogonial cell through different stages of follicular development. The FSH or follicle stimulating hormone is what helps in the formation and ensures the uninterrupted development of these ovarian follicles. As the secondary oocyte in the Graafian follicle proceeds towards ovulation, LH or Luteinizing hoone is released which hastens the rupture of the Graafian follicle to release the ovum out into the fimbriae and leads to the formation of Corpus luteum, the formation of which was the prime requirement of the LH.)

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    • Posted by Ruhani Arora 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Anjan Karthi 2 years, 9 months ago

    (b) Leydig cells. (Leydig cells or interstitial cells are specialized cells that are found in the interstitial spaces between the many seminiferous tubules in the testes. When the male individual approaches puberty, the hypothalamus directs the production and release of the Luteinizing hormone in their bodies which through the bloodstream are sent into testes. These cells interact with Leydig cells and aid the production of androgens.)

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    • Posted by Ruhani Arora 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Anjan Karthi 2 years, 9 months ago

    (a) Blastocoel. (Coelom is the general name given to body cavities. Archenteron is the alimentary cavity specifically found in embryonic gastrula stage. Haemocoel is the cavity of the circulatory system through which blood flows.)

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    • Posted by Ruhani Arora 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 3 answers

    Ruhani Arora 2 years, 9 months ago

    I know ki vo eggs produce nhi kar paegi but kya donor ki help se vo pregnant ho skti hai?

    0Thank You

    Navneet Kaur 2 years, 9 months ago

    No.. She can't produce egg

    0Thank You

    Yashi Kushwaha 2 years, 9 months ago

    No

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    • Posted by Sayukta Singh 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Anjan Karthi 2 years, 9 months ago

    Because, if it was actually microlecithal, the zygote formed after fertilisation does not have to be implanted in the endometrium, it could have directly been laid out just like bird eggs.

    1Thank You

    Anjan Karthi 2 years, 9 months ago

    Alecithal.

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    • Posted by Kush Saini 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Komal Sharma 2 years, 9 months ago

    It is lactose operon that are found in bacteria manily e.coil made up of 3gene 1 prometor and 1 operter

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    • Posted by Tanu Parashar 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Preeti Dabral 2 years, 9 months ago

    The physiological functions of the uterine endometrium (uterine lining) are preparation for implantation, maintenance of pregnancy if implantation occurs, and menstruation in the absence of pregnancy. The endometrium thus plays a pivotal role in reproduction and continuation of our species.

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    • Posted by Neel Saini 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 5 answers

    Anjan Karthi 2 years, 9 months ago

    No, it's two. During the completion of first meiotic division, a polar body and secondary oocyte is formed. By the second mitotic division (that starts when sperm tries to protrude into the ovum, a second polar body and the final egg cell (ovum) is formed.

    1Thank You

    Roshni Srivastav 2 years, 9 months ago

    Antibiotic resistance observed in bacteria in light of Darwin's selection theory

    0Thank You

    Kishan . 2 years, 9 months ago

    Example antibiotic resistance observed in bacteria in light of darwinian selection theory

    1Thank You

    Tanu Parashar 2 years, 9 months ago

    Hii

    1Thank You

    Tanu Parashar 2 years, 9 months ago

    One

    2Thank You

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    • Posted by Rama Chouhan 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Kashish Singh 2 years, 9 months ago

    Phytoplankton are producer in aquatic ecosystem and they are algae Zooplankton are primary consumer or we can say secondary producer in aquatic ecosystem and they are small fishes

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    • Posted by Shonshon Ct 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Preeti Dabral 2 years, 9 months ago

    In 1983, Eli Lily, an American company, prepared two DNA sequences corresponding to A and B chains of human insulin and introduced them in the plasmids of E. coli to produce insulin chains. Chains A and B were produced separately, extracted and combined by creating disulphide bonds to form human insulin.

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    • Posted by Palak Thakur 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Preeti Dabral 2 years, 9 months ago

    Where are the options ?

    0Thank You

    Arman Choudhary 2 years, 9 months ago

    🤣😂

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    • Posted by Sami Singh 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 4 answers

    Manisha Manisha 2 years, 9 months ago

    Parthenocarpy is the process in which fruits are formed without fertilization, in which fruits are seedless. Ex Banana

    1Thank You

    Kashish Singh 2 years, 9 months ago

    Firstly try to improve your spellings it's not parthenicarpy it's parthenocarpy. The process of formation of fruit without fertilisation is known as parthenocarpy. Example : Banana

    0Thank You

    Mohit Kumar 2 years, 9 months ago

    Example banana

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    Khushee Tandel 2 years, 9 months ago

    The development of fruit without fertilization is called parthenicarpy

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    • Posted by Lokendra Patil 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Preeti Dabral 2 years, 9 months ago

    The immune system of our body normally fights against the microbes that enter into our body and kills them. If the immune system is successful we do not actually come down with any disease

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    • Posted by Rishan Ahmed 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Sakshi Gupta 2 years, 8 months ago

    From genetics

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    • Posted by Subham Jena 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 2 answers

    Preeti Dabral 2 years, 9 months ago

    Opium is a highly addictive non-synthetic narcotic that is extracted from the poppy plant, Papaver somniferum. The opium poppy is the key source for many narcotics, including morphine, codeine, and heroin. The poppy plant, Papaver somniferum, is the source of opium.

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    Mohit Kumar 2 years, 9 months ago

    Morphine is one of the many, and pharmacologically most important, opium poppy alkaloid (Papaver somniferum). A poppy plant consists of a lot of alkaloids. Most of them are morphine, codeine, narcotine, papaverine, thebaine, narceine and narcotoline.

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    • Posted by Afifa Shaikh 2 years, 9 months ago

    CBSE > Class 12 > Biology
    • 1 answers

    Afifa Shaikh 2 years, 9 months ago

    Antrum

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