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3 years ago

Describe the role of the double fertilisation in angiosperm reproduction

Biology

1 answer:

Vika [28.1K]3 years ago

3 0

Hey there~

Double fertilization gives rise to an endosperm that provides nourishment to the developing embryo. It increases the viability of the seeds of angiosperms. It utilizes both the male gametes produced by the pollen grains.

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According to the current, predominant understanding of the disorder, genetic factors alone are enough to produce schizophrenia.

Assoli18 [71]

Answer:

The answer is FALSE.

Explanation:

Schizophrenia is a personality disorder that affects a person's ability to think, feel and behave clearly.

Although there is a very strong genetic component to schizophrenia, genes alone do not completely explain the illness. Rather it is believed that genes do not directly cause schizophrenia, but do make a person vulnerable to developing the disease alongside other factors such as the environment and altered brain chemistry and structure.

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4 years ago

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An organism is multi-cellular, cannot move about freely, lives on land, and decomposes other organisms for food. Into which king

tia_tia [17]

Answer:

Fungus, because Protist and Archaea are both single-celled, then Plants get their food from the sun, while Fungus is multi-cellular and decomposes other organisms for its food

Explanation:

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3 years ago

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Under anaerobic conditions, such as intense exercise, pyruvate is converted to ____________ . This 3-carbon molecule travels thr

stiv31 [10]

Answer:

Under anaerobic conditions, such as intense exercise, pyruvate is converted to lactate. This 3-carbon molecule travels through the blood to the liver, where it can be converted to glucose by the cori cycle.

Under aerobic conditions, pyruvate enters the mitochondrion, where it is converted to acetyle CoA . This 2-carbon molecule goes on to participate in a series of oxidative reactions called the Citric acid cycle.

Explanation:

In the question ,among the given 6 options ,the simplest way to find the answer can be ,to find either the option is aerobic (presence of free oxygen ) or anaerobic (lack of free oxygen). Among the options , glucose is an incorrect option as it is a carbohydrate and used in respiration process .In aerobic process ,the glucose can be break down but in anaerobic ,it can only be used.

Other option is ATP- ATP is the energy source of the cell and used for storing energy or reactions of the cell,thus this option do not belong to the given question.

thus its clear the rest four options are the answer .

among four two options belong to aerobic and the rest two are anaerobic.

Under anaerobic conditions-

The pyruvate is converted into lactate because under the absence of oxygen only the NAD+ can be regenerated, thus further can allow glycolysis.

The cori cycle is also called lactic acidic cycle, thus this cycle is a metabollic pathway produced by anaerobic glycolysis (which takes place by regeneration of NAD+)transporting the molecules from blood to liver and further converting to glucose

Under aerobic conditions,-

The pyruvate is converted into Acetyle CoA so as to further produce citric acid and then citric acidic cycle. Thus Acetyle CoA forms more ATP which help in the regeneration of NAD+ and production of citric acid cycle takes place.

HENCE , The correct options are - lactate cori acetyle CoA citric acid.

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4 years ago

Please help me ur nice...

valkas [14]

Answer:

The answer is A

Explanation:

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3 years ago

Which of the following terms describes the scales of an artichoke?

Luba_88 [7]

The scales or outer layer of an artichoke are called bracts

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