Recent questions tagged cbsc

Do you agree with the statement only asexual reproduction can give rise to individuals resembling their parent? Support your answer with an example.

asked Feb 6, 2019 by priyanka.clay6

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In non-primate mammals like cows, sheep, rats, deer etc, the cyclical changes that occur during reproduction are called oestrus cycle whereas in primates it is called as menstrual cycle. How can we distinguish between them?

asked Feb 6, 2019 by priyanka.clay6

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Reptiles and frogs are oviparous animals; yet they differ in certain aspects of reproduction. Bring out the differences and mention which of the two animals has more advantage. Give one reason.

asked Feb 6, 2019 by priyanka.clay6

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Give the chromosome number in the gametes of the following, if the number of chromosomes in their meiocytes is as follows: a. Dog-78 b.Rice – 24 c. Housefly – 12 d. Butterfly -380

asked Feb 5, 2019 by priyanka.clay6

1 answer

Fill in the missing columns:

asked Feb 5, 2019 by priyanka.clay6

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In seed plants how are the non-motile gametes carried to female gamete?

asked Feb 5, 2019 by priyanka.clay6

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Name the plant which flower only once in their life time.

asked Feb 5, 2019 by priyanka.clay6

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Name the type of plants that show clear cut vegetative, reproductive and senescent phases.

asked Feb 5, 2019 by priyanka.clay6

1 answer

What is a vegetative phase in plants?

asked Feb 5, 2019 by priyanka.clay6

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What do you mean by clones?

asked Feb 5, 2019 by priyanka.clay6

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Name the structure from where every sexually reproducing organism begins their life.

asked Feb 5, 2019 by priyanka.clay6

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Name the type of fertilization wherein the survival of the organism up to adulthood is threatened.

asked Feb 5, 2019 by priyanka.clay6

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Name the scientific name of the plant which flower once in 12 years.

asked Feb 5, 2019 by priyanka.clay6

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Name the stage of growth and maturity in the life of animals before they can reproduce sexually.

asked Feb 5, 2019 by priyanka.clay6

1 answer

The type of reproduction wherein the off springs produced are identical to each other and to the parent.

asked Feb 5, 2019 by priyanka.clay6

1 answer

What is the significance of reproduction?

asked Feb 5, 2019 by priyanka.clay6

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In a culture there is a mixture of haploid and diploid cells. It must be because of a) Generative cells b) Vegetative cells c) anther wall d) pollen cells

asked Feb 5, 2019 by priyanka.clay6

1 answer

Why do organisms like algae and fungi which normally adopt asexual reproduction switch over to sexual method of reproduction just before the onset of adverse conditions?

asked Feb 5, 2019 by priyanka.clay6

1 answer

Most sugarcane varieties cultivated today are aneuploids and are sterile. But they grow and perform extremely well. Sterility in sugarcane is not of any disadvantage. Why?

asked Feb 5, 2019 by priyanka.clay6

1 answer

If a branch “dasheri mango” is grafted on a tree producing “desi mangoes” what type of mangoes will be borne on grafted branch& other branches of the plant?

asked Feb 5, 2019 by priyanka.clay6

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Fertilization results in the production of zygote. Zygote is called as a vital link. Why is it called so?

asked Feb 5, 2019 by priyanka.clay6

1 answer

Flowering varies from plant to plant. Give 2 examples in support of this statement.

asked Feb 5, 2019 by priyanka.clay6

1 answer

Why do plants like bryophytes and pteridophytes produce a large number of male gametes?

asked Feb 5, 2019 by priyanka.clay6

1 answer

What is common among earthworm, leech and sponge with regard to reproductive organs?

asked Feb 5, 2019 by priyanka.clay6

1 answer

Do haploid organisms have meiosis in their lifecycle? If yes, state when does it occur?

asked Feb 5, 2019 by priyanka.clay6

1 answer

Why are the following called as heterogametes? Give an example.

asked Feb 5, 2019 by priyanka.clay6

1 answer

How is vegetative propagation related to the following plants ?

asked Feb 5, 2019 by priyanka.clay6

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How is a nodal segment in sugarcane helpful as a reproductive unit?

asked Feb 5, 2019 by priyanka.clay6

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How is gemma cup and gemmules differ from each other?

asked Feb 5, 2019 by priyanka.clay6

1 answer

Some organisms reproduce to produce genetically similar individuals. What is the type of reproduction do they follow? Why are the individuals genetically similar?

asked Feb 5, 2019 by priyanka.clay6

2 answers

Filtration is a method of separation of mixtures that are

asked Apr 12, 2018 by meena.p

1 answer

Which uniform is made of thick material that does not tear easily?

asked Dec 5, 2017 by priyanka.c

1 answer

State of matter with fixed volume which can be compressed slightly is

asked Nov 23, 2017 by priyanka.c

1 answer

How long is a meter stick?

asked Nov 23, 2017 by priyanka.c

1 answer

Warm dry winds blowing down the east slopes of rockies is known as

asked Nov 23, 2017 by priyanka.c

1 answer

Insects help in

asked Nov 23, 2017 by priyanka.c

1 answer

The meaning of letter C in first aid A-B-C's

asked Nov 23, 2017 by meena.p

1 answer

When do desert flowers come to life?

asked Nov 23, 2017 by meena.p

1 answer

Which of the following hangs upside down on a tree:-

asked Nov 23, 2017 by meena.p

1 answer

What is the color of enamel?

asked Nov 23, 2017 by priyanka.c

1 answer

Which of the nutrient gives energy

asked Nov 23, 2017 by meena.p

1 answer

The length of small intestine in a human adult is about

asked Nov 23, 2017 by priyanka.c

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The process of digestion in humans is completed in:

asked Nov 23, 2017 by meena.p

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How many stages of tooth developments are there?

asked Nov 23, 2017 by meena.p

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Which of the following food is a fibre?

asked Nov 23, 2017 by priyanka.c

1 answer

The abdomen of an insect is

asked Nov 23, 2017 by meena.p

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Which of the following animals sleep standing up?

asked Nov 23, 2017 by priyanka.c

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What kind of soils are formed by wind dust in and around hot deserts?

asked Nov 23, 2017 by meena.p

1 answer

Why are the leaves green in color?

asked Nov 23, 2017 by priyanka.c

1 answer

The colors seen in a rainbow

asked Nov 23, 2017 by meena.p

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