Hevea brasiliensis is a
 1) Herb
 2) Shrub
 3) Cladode
 4) Tree

Which of the following is correctly matched without exception in regard to plant classification?

1) Family - Poaceae - ae

2) Division - Pteridophyta - phyta

3) Class - Bryopsida - sida

4) Genus - Solanum - um

The following ratio of hormonal concentration is required to induce callus to form shoot and root.

 1) Gibberellins à auxin
 2) Auxin à Cytokinin
 3) Gibberellins à Cytokinin
 4) Ethylene à auxins

The group of plants similar to animals in their requirements of oxygen for cellular respiration is
1) lichens
2) fungi
3) viruses
4) blue green algae

The entry of water from the soil up to xylem elements of roots is because of
1. Gradient of suction pressure
2. Turgor pressure
3. Degree of imbibition
4. Ion concentration in water

Significance of treating bacterial cells with calcium chloride before transformation is to facilitate

1) Binding of DNA to the cell surface
2) Uptake of DNA through membrane transport proteins
3) Uptake of DNA by creating transient pores in the bacterial cell wall.
4) Expression of antibiotic resistance gene

All of the following hormones are involved in the menstrual cycle EXCEPT:

1. estrogen
2. LH
3. prolactin
4. progesterone

Which of the following is NOT a produce of the light dependent reaction?
 1) Oxygen
 2) ATP
 3) NADPH
 4) Sugar

Primary medullary rays are organized during secondary thickening in

1) dicot roots
2) dicot stems
3) woody monocot stems
4) none of the above

An open circulatory system occurs in:

 (1) Reptiles
 (2) Man
 (3) Animals
 (4) Insects