Human Reproduction — BIOLOGY STD 12 Science — Question

Which scientist experimented and demonstrated that life emerges from pre-existing life?

What is funiculus?

GPP - R = NPP
What does 'R' represent in the given equation for productivity in an ecosystem?

Name the enzyme that joins the small fragments of DNA of a lagging strand during DNA replication.

Identify True/ False statements. Correct each false statement to make it true.
Leydig cells synthesise androgens. (True/ False)

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.

Sex chromosome complement of a female bird is ______.

Why is secondary immune response more intense than the primary immune response in humans?

Name the gas released and the process responsible for puffing up of the bread dough when Saccharomyces cereviseae is added to it.

OR

Name the metabolic pathway associated with the rising of dough in making bread. What makes the dough rise?

Write the name of cry gene which conrol cotton bollworm and maize borer.