21.

Afla toxins are produced by

• bacteria

• fungi

• viruses

• viruses

B-diversity is also known as

• ecosystem diversity

• between habitat diversity

• within habitat diversity

• within habitat diversity

Commercially important cotton fibers are

• epidermal hairs of seeds

• woody fibers of roots

• phloem fibres of roots

• phloem fibres of roots

A member of Liliaceae that shows reticulate venation is

• Scilla

• Smilax

• Aloe

• Aloe

Euphenics is

• manipulation of genes

• improvement of race

• study of conditions affecting organisms

• study of conditions affecting organisms

Araneology is

• rearing of bees

• study of aphids

• study of spiders

• study of spiders

What does 'Corpus luteum' secrete?

• Testosterone

• Estrogen

• Haemoglobin

• Haemoglobin

The male sex hormone is

• estrogen

• testosterone

• insulin

• insulin

Iodine test is used to detect

• carbohydrate

• protein

• fat

• fat

Absorption of water from cut ends of stems disproves the

• Theory of capillarity

• Cohesion tension theory

• Root Pressure theory

• Root Pressure theory