Forum

How do Organisms Reproduce?

In Spirogyra, asexual reproduction takes place by
(a) breaking up of filaments into smaller bits
(b) division of a cell into two cells
(c) division of a cell into many cells
(d) formation of young cells from older cells.

07/11/2024

Science

10th

How do Organisms Reproduce?

A feature of reproduction that is common to Amoeba, Spirogyra and Yeast is that
(a) they reproduce asexually
(b) they are all unicellular
(c) they reproduce only sexually
(d) they are all multicellular

07/11/2024

Science

10th

How do Organisms Reproduce?

Characters that are transmitted from parents to offspring during reproduction show
(a) only similarities with parents
(b) only variations with parents
(c) both similarities and variations with parents
(d) neither similarities nor variations

07/11/2024

Science

10th

How do Organisms Reproduce?

Characters transmitted from parents to offspring are present in
(a) cytoplasm
(b) ribosome
(c) golgi bodies
(d) genes

07/11/2024

Science

10th

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