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How do Organisms Reproduce?

Offspring formed by asexual method of reproduction have greater similarity among themselves because
(i) asexual reproduction involves only one parent
(ii) asexual reproduction does not involve gametes
(iii) asexual reproduction occurs before sexual reproduction
(iv) asexual reproduction occurs after sexual reproduction
(a) (i) and (ii) (b) (i) and (iii)
(c) (ii) and (iv) (d) (iii) and (iv)

07/11/2024

Science

10th

How do Organisms Reproduce?

Which of the following is the correct sequence of events of sexual reproduction in a flower?
(a) pollination, fertilisation, seedling, embryo
(b) seedling, embryo, fertilisation, pollination
(c) pollination, fertilisation, embryo, seedling
(d) embryo, seedling, pollination, fertilisation

07/11/2024

Science

10th

How do Organisms Reproduce?

In a flower, the parts that produce male and female gametes (germ cells) are
(a) stamen and anther
(b) filament and stigma
(c) anther and ovary
(d) stamen and style

07/11/2024

Science

10th

How do Organisms Reproduce?

In the list of organisms given below, those that reproduce by the asexual method are
(i) banana
(ii) dog
(iii) yeast
(iv) Amoeba
(a) (ii) and (iv) (b) (i), (iii) and (iv)
(c) (i) and (iv) (d) (ii), (iii) and (iv)

07/11/2024

Science

10th

Control and Coordination

Why is the flow of signals in a synapse from axonal end of one neuron to dendritic end of another neuron but not the reverse?

07/11/2024

Science

10th

Control and Coordination

How does chemical coordination take place in animals?

07/11/2024

Science

10th

Control and Coordination

“Nervous and hormonal systems together perform the function of control and coordination in human beings.” Justify the statement.

07/11/2024

Science

10th

Control and Coordination

What are reflex actions? Give two examples. Explain a reflex arc

07/11/2024

Science

10th

Control and Coordination

Name various plant hormones. Also give their physiological effects on plant growth and development.

07/11/2024

Science

10th

Control and Coordination

Mention one function for each of these hormones :
(a) Thyroxin
(b) Insulin
(c) Adrenaline
(d) Growth hormone
(e) Testosterone.

07/11/2024

Science

10th