List any two strategy adopted by bisexual flowers to prevent self-pollination.

“The endosperm of angiosperm is different from gymnosperm”. Do you agree. Justify your answer.

What is polyembryony. How it can commercially exploited.

What is Mellitophily?

List out the functions of tapetum.

What are the reasons for Mendel’s successes in his breeding experiment?

Differentiate incomplete dominance and codominance.

From the above figure identify the type of mutation and explain it.

Explain the mechanism of crossing over.

What do you know about the word pBR332?

What are restriction enzyme. Mention their type with role in Biotechnology.

How will you identify a vector ?

Explain the basic concepts involved in plant tissue culture

Lichen is considered as a good example of obligate mutualism. Explain.

List any two adaptive features evolved in parasites enabling them to live successfully on their host?

How does an orchid ophrys ensures its pollination by bees ?

Why do submerged plants receive weak illumination than exposed floating plants in a lake?

What is thermal stratification? Mention their types.

What is myrmecophily?

Construct the food chain with the following data.
Hawk, plants, frog, snake, grasshopper.

Shape of pyramid in a particular ecosystem is always different in shape. Explain with example.

How do forests help in maintaining the climate?

Which one gas is most abundant out of the four commonest greenhouse gases? Discuss the effect of this gas on the growth of plants?

Explain the best suited type followed by plant breeders at present?

What is TSM? How does it classified and what does it focuses on?