Most animals that live in deep oceanic waters are

• tertiary consumers

• detritivores

• primary consumers

• secondary consumers

In a 3.2 Kbp long piece of DNA, 820 adenine bases were found. What would be the number of cytosine bases?

• 780

• 1560

• 740

• 1480

Match column I with column II and select the correct option from codes given below.

Column I	Column II
Brassica	Himgiri
Okra	Pusa Komal
Wheat	Pusa Gaurav
Cowpea	Pusa Sawani

• A - (iii), B - (iv), C- (i), D- (ii)

• A - (i), B - (iii), C - (ii), D - (iv)

• A - (iv), B - (iii), C - (i), D - (ii)

• A - (ii), B - (iv), C - (i), D - (iii)

Some of the steps of DNA fingerprinting are given below. Identify their correct sequence from the options given.

A. Electrophoresis of DNA fragments
B. Hybridisation with DNA probe
C. Digestion of DNA by restriction endonucleases
D. Autoradiography
E. Blotting of DNA fragmentsto nitrocellulose membrane

• C - A - B - E - D

• C - A - E - B - D

• A - E - C - B - D

• A - C - E - D - B

One of the following statements is incorrect with reference to biodiversity. Identify it.

• The areas with very few plant and animal species (low species richness) with no threatened species are called biodiversity hotspots.

• Biodiversity increases from higher altitudes to lower altitudes

• Biodiversity decreases from the equator to polar regions

• Depletion in genetic diversity of crop plants is mainly due to the introduction of better varieties with high yield, disease resistance, etc.

Tetradynamous condition is found in

• Hibiscus rosa-sinesis

• Ocimum sanctum

• Helianthus annuus

• Brassica campestris

Which of the following represents the action of insulin?

• Increases blood glucose level by stimulating glucagon production

• Decreases blood glucose level by forming glycogen

• Increases blood glucose level by promoting cellular uptake of glucose

• Increases blood glucose level by hydrolysis of glycogen

48.

If the sequence of bases in the coding strand of a double stranded DNA is 5'-GTTCGAGTC-3', the sequence of bases in its transcript will be

• 5'-GACUCGAAC-3'

• 5'-CAAGCUCAG-3'

• 5'-GUUCGAGUC-3'

• 5'-CUGAGCUUG-3'

One greenhouse gas contributes 14% to total global warming and another contributes 6%. These are respectively identified as

• N₂O and CO₂

• CFCs and N₂O

• methane and CO₂

• methane and CFCs

The following is the diagram of T.S. of anther. Identify the parts labelled A, B and C.

• A- Connective tissue, B- Pollen grain, C- Endothecium

• A- Endothecium, B- Connective tissue, C- Pollen grains

• A- Pollen grains, B- Connective tissue, C- Endothecium

• A- Endothecium, B- Pollen grains, C- Connective tissue