Sexual Reproduction in Flowering Plants — BIOLOGY STD 12 Science — Question

Name the condition in which protoplasm of the plant cell shrinks.

The flower of brinjal is referred to as chasmogamous while that of beans is cleistogamous. How are they different from each other?

Name the physical processes employed in the primary treatment of sewage.

Which are more numerous, secondary consumers or tertiary consumers?

Who was Edward Jenner?

Two statements are given-one labelled Assertion and the other labelled Reason. Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.

1. Both assertion and reason are true and reason is the correct explanation of assertion.
2. Both assertion and reason are true but reason is not the correct explanation of assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false.

Assertion: Biopatents are awarded for biological entities and all products derived from them.
Reason: Patent on use of turmeric in wound healing was cancelled in 2008.

Name the following : Type of cleavage in human zygote

How does smoking tobacco in human lead to oxygen deficiency in their body?

Turner's syndrome, Klinefelter's syndrome, Down's syndrome, Haemophilia.

Name the common function that cotyledons and nucellus perform.