Heart wood helps in

 (1) circulation of solutes
 (2) mechanical support
 (3) translocation of food
 (4) ascent of sap

The genetic material of a plant 'Virus is'
1. DNA 
2. RNA 
3. ATP 
4. TPN

The name of group 'spermatophyta' is derived from their feature that they are

1) sperm bearing lower plants
2) seed producing plants
3) fruit producing plants
4) sperm proddducing higher plants

Conversion of starch of starch to orginic acid is essential for

1) Stomatal closure
2) Stomatal opening
3) Stomatal initiation
4) Stomatal growth

Why is human female said to homogametic?
 1) Because they produce single type of gametes.
 2) Because they produce different type of gametes.
 3) Because gametes have reserved food
 4) Because gametes have no food

Fertilization in frog takes place in
1. Uterus
2. Fallopian tube
3. Water
4. Upper part of oviduct

 Synergids are present at

(1) Chalazal end

(2) Micropylar end

(3) Both chalazal and micropylar ends

(4) Integument

Which of the following is necessary for oxidative phosporylation to occur?
 1) ATP
 2) oxygen
 3) carbon dioxide
 4) lactic acid

Which of the following is caused in human liver by anaerobic bacteria?

(1) Foamy liver
(2) Hobnail liver
(3) Liver spots
(4) None of these

Which one of the following is a matching pair of a body feature and the animal possessing it?

1) Ventral heart - scorpion
2) Post anal tail - octopus
3) Ventral central nervous system - leech
4) Pharyngeal gill slits absent in embryo- chamaeleon