Category: Biology Mcqs

A.  Human population growth

B. Infectious diseases

C. Addictive drugs

D. Pollution

E. All of these 

A. Animals
B. Homo sepions
C. Omnivore
D. Consumer

A. There are 5-7 pairs of heart.
B. They are present between 1-7th segments.
C. They are present lateral to the oesophagus.
D. They pump blood from ventral to dorsal vessel.

A. NADH
B. Cytochrome a3
C. Water
D. Oxygen

A. Positive phototropism and negative geotropism
B. Negative phototropism and positive geotropism
C. Negative tactic movement and positive tropic movement
D. Positive geotropism of stem and roots

A. Growth of pathogens
B. Soil Infertility
C. Slowing of crops growth
D. Eradication of disease

A. Pinnularia, Navicula, Cymbella, Melosira
B. Euglenamorpha, Hedneria , Heteronema, Colacium
C. Nostoc, Anabaena, Aulosira, Cylindrospermum
D. Cochlodinium, Gymnodinium, Lenodinium, Peridinium

A. Ionic as well as non ionic substance in aqueous media retains their identity
B. Enzymes can not perform catalysis reaction in this medium
C. Ions and molecules move randomly thus are in more favorable state to react with other molecules and ions
D. It is less favorable media for chemical reactions

A. Hydra
B. Obelia
C. Aurelia
D. None of these