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The light-harvesting complex (or antenna complex; LH or LHC) is an array of protein and chlorophyll molecules embedded in the thylakoid membrane of plants and cyanobacteria, which transfer light energy to one chlorophyll a molecule at the reaction center of a photosystem.

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Systema meaning

Posted by V B 3 years, 7 months ago

CBSE > Class 11 > Biology

3 answers

Sia ? 3 years, 7 months ago

Systema has been presented in some Western media as a Russian martial art, although it is not clear it exists as a single martial art.

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Ani G 3 years, 5 months ago

Systema means sequence or order

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Hariom Dalal 3 years, 7 months ago

Systema is a Latin word which means systematic arrangements of organisms. Systematic is derived from systema

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Importance of feathers in birds

Posted by Naveen Rajasekar 3 years, 7 months ago

CBSE > Class 11 > Biology

1 answers

Apeksha Dodyal 3 years, 7 months ago

Feathers enables the birds to prevent heat loss in extreme cold conditions preen glands on bird's skin helps in feather dressing due to this gland there body do not wets even when they are in contact with water .

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What is bisexual

Posted by Akash U K 3 years, 7 months ago

CBSE > Class 11 > Biology

1 answers

Hiya Modi 3 years, 7 months ago

Those plant who have both Male and female in one plant

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What is marpology

Posted by Akash U K 3 years, 7 months ago

CBSE > Class 11 > Biology

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Sia ? 3 years, 7 months ago

In linguistics, morphology is the study of words, how they are formed, and their relationship to other words in the same language. It analyzes the structure of words and parts of words such as stems, root words, prefixes, and suffixes.

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Khushi Pandey 3 years, 6 months ago

Morohology simply means appearence ( external appearence).

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Explain heart

Posted by Anurag Thakur 3 years, 7 months ago

CBSE > Class 11 > Biology

3 answers

Nidhi ? Bhola ? 3 years, 6 months ago

Heart have 4 chambers,2chamber left side of heart and vice versa and both sides of heart have valves,one side have 2valves that is bicuspid valves,and other side have 3 valves that is tricuspid valves, and heart have artries and veins Arteries carry blood away from the heart, Veins carry blood towards the heart

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Helper . 3 years, 7 months ago

Heart is dil

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Mamta ... 3 years, 7 months ago

The heart is an organ found in every vertebrate. It is a very strong muscle. It is on the left side of the body in humans and is about the size of a fist. It pumps blood throughout the body.

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Write short note on dark reaction in C4 plants

Posted by Patel Vidhi 3 years, 7 months ago

CBSE > Class 11 > Biology

1 answers

Khushi Pandey 3 years, 6 months ago

After absorption of light engery from sun the process which takes place by the help of enzymes in plants for synthesis of their food is called dark reaction.

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How many sperms does it need to fertilise one egg.

Posted by Shahu Sardar 3 years, 7 months ago

CBSE > Class 11 > Biology

4 answers

Nidhi ? Bhola ? 3 years, 6 months ago

1,because 1sperm fertilise only one egg

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Hey Kriti 3 years, 7 months ago

During fertilization, when the sperm(having acrosome in the head of sperm) come in contact with zona pellucida(layer of ovum), zona pellucida allows to enter only that sperm and prevents the entry of other sperms. Acrosome helps to penetrate the zona pellucida.

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Apeksha Dodyal 3 years, 7 months ago

It needs two sperms because, one of the sperm reacts with the diploid secondary nucleus to form primary endosperm nucleus which is triploid in nature and another sperm reacts with the egg to form zygote.endosperm provide nourishment to developing embryo.

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Gunja Kumari 3 years, 7 months ago

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While having lessons of biology in school, Rohit listened carefully to his teacher Mrs Kavita, explaining how do plants grow, develop and prepare their own food by photosynthesis. She also explained them that they themselves can observe this by growing a plant at home. Rohit too, out of curiosity potted a plant in his room but after a week or two, he observed that leaves of plant became yellow and finally they started wilting. He asked his biology teacher about this and she told him that light is necessary for photosynthesis to occur. (a)Give an overall equation for photosynthesis showing its requirements as well as products formed. (b)What role do light play in the process of photosynthesis? (c)Name other factors that influence the rate of photosynthesis. (d)What values are observed from Rohit’s characte

Posted by Niranjana Rajesh 3 years, 7 months ago

CBSE > Class 11 > Biology

1 answers

Adithya Dev A 3 years, 6 months ago

(a) 6 CO2 (g) + 6 H2O (l) ---Sunlight---Chlorophyll---> C6H12O6 (aq) + 6 O2 (g). (b) Light energy, obtained by plants as photons with the help of chlorophyll, is used in breaking down water molecules into hydrogen (used to reduce carbon dioxide to carbohydrates) and oxygen. (c) Factors influencing rate of photosynthesis = Availability of carbon dioxide, availability of water, presence of sunlight and presence of chlorophyll.

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Example for plamately compound leaf

Posted by Kavya S.P 3 years, 7 months ago

CBSE > Class 11 > Biology

1 answers

Pushpender Gill 3 years, 7 months ago

Silk cotton.

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Different phases of metosis

Posted by Lee Moyon 3 years, 7 months ago

CBSE > Class 11 > Biology

1 answers

Kavya S.P 3 years, 7 months ago

Prophase, metaphase,anaphase,telophase,

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Why apple is false or drupe fruit ?

Posted by Pushpender Gill 3 years, 7 months ago

CBSE > Class 11 > Biology

1 answers

Balwant Kumar 3 years, 7 months ago

If the fruit is derived from the ovary alongwith other accessory floral parts, it is called false fruit.

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Non memberanous cell

Posted by Dev Bharati 3 years, 7 months ago

CBSE > Class 11 > Biology

1 answers

Pushpender Gill 3 years, 7 months ago

Mycoplasma , example PPLO(Pleuro Pneumonia Like Organisms) Hope this Will help you !!

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What is a large intestine and small intestine

Posted by Keshav Kumawat 3 years, 7 months ago

CBSE > Class 11 > Biology

2 answers

Khushi Rao 3 years, 5 months ago

Small intestine is a part of digestive system , it helps in the digestion of food which came from the stomach and get the energy from food . Large intestine is also a part of digestive system, it helps to absorb water from the digested food and also helps to get the food to rectum and ****

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Vishal Prajapat 3 years, 7 months ago

Large intestine me food store hota h aur small me digestion hota h

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Why all the factors in our body are favorable for diffusion of o2 and co2

Posted by Nainu Kaur 3 years, 8 months ago

CBSE > Class 11 > Biology

1 answers

Arvind Jangid 3 years, 8 months ago

Reason: The role of oxygen in the regulation of respiratory rhythm is quite significant. All the factors in our body are facourable for diffusion of O2 from alveoli to tissues and that of CO2 from tissue to alveoli. ,brgt The role of oxygen in the regulation of respiratory rhythm is quite insignificant.

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Full description of Liverworts with Diagram ?

Posted by Aman Choudhary 3 years, 7 months ago

CBSE > Class 11 > Biology

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Full description of Liverworts with Example ?

Posted by Aman Choudhary 3 years, 7 months ago

CBSE > Class 11 > Biology

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Assertion (A) Glutamic acid is an acidic flower, amino acid. Reason (R) It contains only carboxylic groups.

Posted by Kartik Chetija 3 years, 8 months ago

CBSE > Class 11 > Biology

0 answers

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Difference between cartilaginous fish and bony fish

Posted by Aryan Singh 3 years, 8 months ago

CBSE > Class 11 > Biology

1 answers

Arvind Jangid 3 years, 8 months ago

Difference Between Cartilaginous Fish and Bony Fish Cartilaginous Fish Bony Fish Biological Classification Cartilaginous fishes fall under the class Chondrichthyes All bony fish fall under the superclass Osteichthyes Endoskeleton Primarily composed of cartilage Primarily composed of bone Operculum Present Absent Tail Heterocercal in nature Homocercal in nature Ecosystem Members primarily inhabit marine ecosystems. However, some exceptions are present Members inhabit both marine and freshwater ecosystems Mode of Fertilization Internal (exceptions are present) External Swim Bladder Absent. Buoyancy is maintained with oil stored in livers. Present (except for some bony fishes that dwell in the deep). Example Great white sharks, whale sharks and every other species of sharks Sunfish, Tuna, Herring, Trouts etc

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Why is glucose being synthesized as end product of photosynthesis is not transported or stored in plant body? Mention in what form is food transported and stored in plant body and why?

Posted by Rishika Yadav 3 years, 8 months ago

CBSE > Class 11 > Biology

2 answers

Adithya Dev A 3 years, 6 months ago

Glucose is highly soluble in water. Therefore, after photosynthesis, the obtained glucose would get dissolved in water and be lost through transpiration. Therefore, just after synthesis, Glucose is converted into starch which, being an insoluble form of carbohydrate, makes it an ideal storeable form in plants.

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Pushpender Gill 3 years, 7 months ago

It's molecules is being large can easily transported, so it is first converted into sucrose than transported... Fact: sucrose is sweetest sugar!!! I think this would help you.

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What is division of labour

Posted by Shubham Kumar Modanwal 3 years, 7 months ago

CBSE > Class 11 > Biology

2 answers

Sia ? 3 years, 7 months ago

The specialisation of work tasks by means of which different occupations are combined within a production system. With the development of industrialisation, the division of labour becomes more complex than any prior type of production system. In the modern world, the division of labour is international in scope. On the basis of division of labour, the concept of organic solidarity functions with the form of social cohesion. The interdependence of members of society is the result of such kind of solidarity.

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Khushi Pandey 3 years, 6 months ago

The work of pancreas, stomach, heart, small intestine, are different means they have divided the task among them. This is division of labour. Hope u understand ?

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What is living? (5m)

Posted by Bye Sorry Sorry 3 years, 8 months ago

CBSE > Class 11 > Biology

3 answers

Khushi Pandey 3 years, 6 months ago

Metabolism and response to stimuli(environment) is the basis to tell a organism is living or not because mountain also show growth We cannot say that they are living similarly there are many couples who are unfertile so we can't say they not living. Hope u understand ???

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Areebah Khan 3 years, 7 months ago

An organism is said to be living, if it shows certain characteristic features that make it different from non-living things.

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Pushpender Gill 3 years, 7 months ago

Living refer to those which do:- - Growth - metabolism - reproduce - consiousness, etc Describe above points you will score ? full marks Thanks!!

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Watson crick model

Posted by Aditya Dev 3 years, 8 months ago

CBSE > Class 11 > Biology