The structure of DNA was proposed by_____.

1. 1. Louis Pasture
   2. William Harvey
   3. Watson and Crick
   4. Charles Darwin

Notochord is present throughout life in_____.

1. 1. Urochordates
   2. Chordates
   3. Vertebrates
   4. Cephalochordates

Magnifying power of electron microscope as compared to eye is_____.

1. 1. 500 X
   2. 500000X
   3. 250000X
   4. 250X

Oyster mushroom is an example of predator fungi which attack on_____.

1. 1. Round worms
   2. Pin warms
   3. Tape worms
   4. Platehelminthes

Double fertilization occurs in_____.

1. 1. All plants
   2. All seed plants
   3. Angiosperms
   4. Gymnosperms

_____is essential for the formation of hemoglobin.

1. 1. Iron
   2. Calcium
   3. Water
   4. Carbohydrates

Which one of the following is most likely to occur in an animal during winter?

1. 1. Activation of sweat glands
   2. Thermogenesis
   3. Dilation of skin blood vessels
   4. Panting

Cell wall is absent in_____.

1. 1. Cocci
   2. Bacilli
   3. Mycoplasma
   4. Mycobacterium

The Process of egg formation in the female is called _____.

1. 1. Oogenesis
   2. Oocyte
   3. Oviduct
   4. All of these

Cyanobacteria have _____cell wall?

1. 1. Gram +ve
   2. Acid fast
   3. Gram – ve
   4. Cellulose rich