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Ask QuestionPosted by Narendra Prasad Mishra 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
The pea is most commonly the small spherical seed or the seed-pod of the pod fruit Pisum sativum. Each pod contains several peas, which can be green or yellow. Botanically, pea pods are fruit, since they contain seeds and develop from the ovary of a (pea) flower. The name is also used to describe other edible seeds from the Fabaceae such as the pigeon pea (Cajanus cajan), the cowpea (Vigna unguiculata), and the seeds from several species of Lathyrus.
P. sativum is an annual plant, with a life cycle of one year. It is a cool-season crop grown in many parts of the world; planting can take place from winter to early summer depending on location. The average pea weighs between 0.1 and 0.36 gram. The immature peas (and in snow peas the tender pod as well) are used as a vegetable, fresh, frozen or canned; varieties of the species typically called field peas are grown to produce dry peas like the split pea shelled from a matured pod. These are the basis of pease porridge and pea soup, staples of medieval cuisine; in Europe, consuming fresh immature green peas was an innovation of early modern cuisine.
Posted by Shivaji Gaykwad 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
The human appendix may be considered as a vestigial organ as it has been proved that the removal of the organ after infancy does not create any harm [1-3]. But the appendix has developed to the extreme in human and strategically placed to an important site at the junction of midgut and hindgut. The term "vermiform" comes from Latin and means "worm-shaped." The appendix used to be considered a vestigial organ, but this view has changed over the past decades. Recent research suggests that the appendix may serve an important purpose. In particular, it may serve as a reservoir for beneficial gut bacteria.
Posted by Shivaji Gaykwad 5 years, 2 months ago
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Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 2 months ago
Meghna Thapar 5 years, 2 months ago
Anatomical evidences help us to study how species have evolved over a period of time. Analogous structures support the theory of evolution and explain the fact that how species build up adaptations in order to fit in an environment whereas homologous structures help us to understand common ancestry. A common example of comparative anatomy is the similar bone structures in forelimbs of cats, whales, bats, and humans.
Posted by Shivaji Gaykwad 5 years, 2 months ago
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Meghna Thapar 5 years, 2 months ago
Acquired (or somatic) mutations occur at some time during a person's life and are present only in certain cells, not in every cell in the body. These changes can be caused by environmental factors such as ultraviolet radiation from the sun, or can occur if an error is made as DNA copies itself during cell division. Harmful mutations may cause genetic disorders or cancer. A genetic disorder is a disease caused by a mutation in one or a few genes. A human example is cystic fibrosis. A mutation in a single gene causes the body to produce thick, sticky mucus that clogs the lungs and blocks ducts in digestive organs.
Meghna Thapar 5 years, 2 months ago
A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses. A mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed.
Posted by Gautam Iyer 5 years, 3 months ago
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Posted by Faizan Hussain 5 years, 3 months ago
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Shivaji Gaykwad 5 years, 3 months ago
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Satyam Lodhi Rajput 5 years, 2 months ago
Shivaji Gaykwad 5 years, 3 months ago
Shivaji Gaykwad 5 years, 3 months ago
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Posted by [email protected] Rameshsasi2004 5 years, 3 months ago
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Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
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Shivaji Gaykwad 5 years, 2 months ago
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Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
The inner glands produce adrenaline. Adrenaline is also known as the “fight-or-flight hormone.” It's released in response to a stressful, exciting, dangerous, or threatening situation. Adrenaline helps your body react more quickly. In response to acute stress, the body's sympathetic nervous system is activated due to the sudden release of hormones. The sympathetic nervous systems stimulate the adrenal glands triggering the release of catecholamines, which include adrenaline and noradrenaline.
Posted by Faizan Hussain 5 years, 3 months ago
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Priyanshu ?✌??? 5 years, 2 months ago
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Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
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Faizan Hussain 5 years, 3 months ago
Posted by Rohan £#@#÷׶¥€~ 5 years, 3 months ago
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Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
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Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Autonomic nervous system is a part of peripheral nervous system which is responsible for involuntary actions i.e. it regulates all those actions or responses of our body that are not according to our will. Example - beating of heart.
It has two parts:
i. Sympathetic nervous system
ii. Parasympathetic nervous system
The nerve fibres of both these parts have opposing effects i.e. if one stimulates a particular response, the muscles of other system inhibits that response.
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Posted by Dharani Vinayak 5 years, 3 months ago
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Posted by Tamanna Rathee 5 years, 3 months ago
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Tamanna Rathee 5 years, 2 months ago
Posted by Tamanna Rathee 5 years, 3 months ago
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Faizan Hussain 5 years, 3 months ago
Posted by Khushi Anurag 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
The Seed Germination Process :
1) Imbibition: water fills the seed.
2) The water activates enzymes that begin the plant's growth.
3) The seed grows a root to access water underground.
4) The seed grows shoots that grow towards the sun.
5) The shoots grow leaves and begin photmorphogenesis.
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Posted by Khushi Anurag 5 years, 3 months ago
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Meghna Thapar 5 years, 2 months ago
The Seed Germination Process :
1) Imbibition: water fills the seed.
2) The water activates enzymes that begin the plant's growth.
3) The seed grows a root to access water underground.
4) The seed grows shoots that grow towards the sun.
5) The shoots grow leaves and begin photmorphogenesis.
The process by which a seed grows into a new plant is called germination. When the seed get all the necessary things like air, water, warmth, space and nutrients from the soil the process of germination starts. During the early stages the seeds will get food from the cotyledons.
Posted by Shivaji Gaykwad 5 years, 3 months ago
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Posted by Saravanan P 5 years, 3 months ago
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Ayush Kashyap 5 years, 2 months ago
Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
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Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
Periscope is used to observe objects around an obstacle. The light from the objects enters the periscope from one end and emerges from the other end and enters into our eyes. We use mirrors inside a periscope to make the light bend in the direction we want to see it.
Periscope is an instrument used for observation around or through an obstacle that prevents direct line-in-sight observation from the observer position.
Posted by Pawan Kumari 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Voltmeter is an electrical measuring device, which is used to measure potential difference between two points in a circuit. Voltmeter is always connected in parallel to a circuit.
Since Galvanometer is a very sensitive instrument, therefore it can not measure high potential difference. In order to convert a Galvanometer into voltmeter, a very high resistance known as "series resistance" is connected in series with the galvanometer.
Posted by Chaitanya Hadpe 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
(i) Take three resistors R1,R2 and R3 and connected them in parallel to make the circuit ; s shown in figure.
(ii) Use voltmeter to take reading of potential difference of three resistors in parallel combination.
(iii) Now, remove the resistors R1 and take the reading of potential difference of remaining resistor's combination.
(iv) Then , remove the resistor R2 and take the reading of potential difference of remaining resistor.
Observation : Voltmeter reading was same in each case. This shows that the potential difference exists across three resistors connected in a parallel arrangement.
Posted by Vansh Marskole Marskole 5 years, 3 months ago
- 2 answers
Yogita Ingle 5 years, 3 months ago
The categories of contraceptive methods are:
- Barrier method (Condoms)
- Surgical method
- Withdrawal method
- Calendar method
- Hormonal method
- IUCD/Copper T/Loop
Two advantages of adopting preventive methods are:
- Helps in maintaining health of women.
- Helps in preventing STDs especially AIDS.
- Helps in birth control.
- Parents can give more attention to children.
Netal Rathi 5 years, 3 months ago
Posted by Priya ✧*｡٩(๑˙╰╯˙๑)و✧*｡ 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
- Cutting tools that employ CO2 lasers are widely used in industries. They are precise, easy-to-automate and don’t need sharpening, unlike knives.
- We use robot-guided lasers to cut pieces of cloth to make things such as denim jeans than using our bare hands. They are faster, more accurate and improve efficiency and productivity.
- Every time you play a CD or a DVD, a semiconductor laser beam bounces off the spinning disc to convert its printed pattern of data into numbers; a computer chip converts these numbers into movies, music, and sound.
- Lasers are used in fibre optic cables and a technology known as photonics which uses photons of light to communicate.
- The military uses laser guided weapons and missiles.
Bishwajeet Kumar 5 years, 3 months ago
Posted by Devesh Singh 5 years, 3 months ago
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Posted by Ayush Singh 5 years, 3 months ago
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Isha Dhankhad 5 years, 3 months ago
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Posted by Channakeshava V 5 years, 3 months ago
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Maniya Jain 5 years, 2 months ago
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Ashok Rathee 5 years, 2 months ago
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