Recent questions tagged fertilization

+2 votes

1 answer

A list of three flowering plants is given below. Which ones out of them are (i) monoecious and (ii) bearing pistillate flowers:

asked Apr 6, 2019 in Class 12 by kratos

+1 vote

1 answer

Are parthenocarpy and apomixis different phenomena? Discuss their benefits.

asked Apr 6, 2019 in Class 12 by kratos

+3 votes

1 answer

New species may be formed if (i) DNA undergoes significant changes in germ cells (ii) chromosome number changes in the gamete

asked Apr 6, 2019 in Class 12 by kratos

+2 votes

1 answer

The following statements (i), (ii) and (iii) seem to describe the water-pollinated submerged plants. Which one of these statements is incorrect?

asked Apr 4, 2019 in Class 12 by kratos

+3 votes

1 answer

Write the physiological reason, why a woman generally cannot conceive a child after 50 years of age ?

asked Apr 3, 2019 in Class 12 by kratos

+2 votes

1 answer

How is pollination carried out in water plants?

asked Apr 2, 2019 in Class 12 by kratos

+3 votes

1 answer

The ovule of an angiosperm is technically equivalent to (a) megasporangium

asked Apr 1, 2019 in Class 12 by kratos

+3 votes

1 answer

As a senior biology student you have been asked to demonstrate to the students of secondary level in your school,

asked Apr 1, 2019 in Class 12 by kratos

+1 vote

1 answer

(a) Name the stage of human embryo the figure represents. (b) Identify ‘a’ in the figure and mention its function.

asked Mar 31, 2019 in Class 12 by kratos

+1 vote

1 answer

The pedicel of the female flower coils after pollination in

asked Mar 30, 2019 in Class 12 by kratos

+2 votes

1 answer

Which of the following flowers only once in its life time ?

asked Mar 30, 2019 in Class 12 by kratos

+1 vote

1 answer

Explain the terms Parturition.

asked Mar 29, 2019 in Class 12 by kratos

+3 votes

1 answer

The signals for parturition originate from ______ .

asked Mar 29, 2019 in Class 12 by kratos

+3 votes

1 answer

A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is:

asked Mar 23, 2019 in Class 12 by kratos

+3 votes

1 answer

Describe the process of parturition in humans.

asked Mar 22, 2019 in Class 12 by kratos

+1 vote

1 answer

Angiosperms bearing unisexual flowers are said to be either monoecious or dioecious.

asked Mar 21, 2019 in Class 12 by kratos

+1 vote

1 answer

During the process of fertilization, when one nucleus fues with egg and the second with the secondary nucleus, it is called :–

asked Mar 21, 2019 in Class 12 by kratos

+2 votes

1 answer

Name the embryonic stage that gets implanted in the uterine wall of human female.

asked Mar 20, 2019 in Class 12 by kratos

+3 votes

1 answer

Even in absence of pollinating agents seed-setting is assured in (a) Commelina

asked Mar 19, 2019 in Class 12 by kratos

+3 votes

1 answer

Difference between Epicotyl and Hypocotyl.

asked Mar 19, 2019 in Class 12 by kratos

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