Give reasons for the following:
(a) Some organisms like honey bees are called parthenogenetic animals
(b) A male honey bee has 16 chromosomes where as its female has 32 chromosomes

Name the hormones produced from the placenta during pregnancy.

Differentiate foeticide and infanticide

What is male heterogamety?

Why tRNA is called an adapter molecule?

Explain stabilizing, directional and disruptive selection with examples

Explain the structure of immunoglobulin with suitable diagram.

Write the key features of organic farming.

Differentiate between Somatic cell gene therapy and germline gene therapy

Differentiate Natality and Mortality

Compare and Contrast the insitu and exsitu conservation. (or) What are the differences between in-situ and ex-situ conservation ?

Why does ozone hole form over Antarctica?

What is Cantharophily.

Explain the law of dominance in monohybrid cross.

Write the salient features of Sutton and Boveri concept.

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

Explain the basic concepts involved in plant tissue culture

How does an orchid ophrys ensures its pollination by bees ?

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

How do sacred groves help in the conservation of biodiversity?

If a person drinks a cup of coffee daily it will help him for his health. Is this correct? If it is correct, list out the benefits.

Differentiate between:
Humoral and CMI immunity