What are diaspores?

Point out the advantages of natural vegetative reproduction

Name the four whorls of a typical flower

Tapetum is dual in origin - Justify

Differentiate between Exine and Intine layers of pollen grain.

Define lethal alleles.

Why extranuclear inheritance is called as cytoplasmic inheritance.

What does the condition synteny refers to?

Why do we call papaya a dimorphic plant.

What are expression vectors?

Expand (i) PEG (ii) PHB

Define Biopiracy.

Define tissue culture.

Mention the way by which culture media and explants are sterilized.

What is a protoplast? Which chemical stain is used to test its viability?

What is ecological hierarchy?

Define
(a) Autecology
(b) Synecology

What does the term 'Timber line' refers to?

Point any two adverse effects of fire in an environment.

What are edaphic factors?

Define Amensalism.

State the role of herbivores and microconsumers in a terrestrial ecosystem.

Define
(a) Hydrosere
(b) Xerosere

Name the plant species which act as indicators for Nitrate pollution & Flouride pollution.

What is invasive species?