The simplest of all bryophytes are_____.

1. 1. Embryophytes
   2. Liverworts
   3. Mosses
   4. Thallophytes

The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by_____.

1. 1. Molecular biologists
   2. Freshwater biologists
   3. Social biologist
   4. Microbiologists

Mycoplasmas have been included in bacteria because _____.

1. 1. Are heterotrophic
   2. Do not have a cell wall
   3. Reproduce by binary fission
   4. Lack membrane bounded organelles

Communities are _____collection of organisms?

1. 1. May be static or dynamic
   2. Static
   3. Dynamic
   4. All of these

2. Which one of the following organisms can serve as a biofertilizer for rice crop?

1. 1. Rhizobium sp.
   2. Blue-green algae
   3. Mycorrhizal fungi
   4. None of these

The productivity of aquatic ecosystem is basically determined by light and_____.

1. 1. CO2
   2. Nutrients
   3. O2
   4. Water

Photosystem II has molecules which absorbs maximum light of_____.

1. 1. 900 m
   2. 800 nm
   3. 700 nm
   4. 680 nm

The sequence of 3 bases on tRNA which is complementary to condon of mRNA is called_____.

1. 1. Code
   2. Gene
   3. Anticodon
   4. Codon

Which chemical component has the same % in bacterial as well as the mammalian cell_____.

1. 1. Water
   2. Carbohydrate
   3. Proteins
   4. Lipids

The uptake of water in plants involves_____.

1. 1. Passive transport
   2. Active transport
   3. A & B
   4. All of these