Question: The structure which has been formed or modified from gill pouches in humans is___________?

• 1. Gills
• 2. Eustachian tube
• 3. Middle ear
• 4. Lungs

Question: Scurvy and beri – beri and caused by the deficiency of___________?

• 1. Vitamin B and C
• 2. Vitamin B and D
• 3. Vitamin C and B
• 4. Vitamin A and B

Question: The word which E-Chatton suggested for bacteria and blue green algae was_____________?

• 1. Autotrophs
• 2. Heterotrophs
• 3. Pro-cariotique
• 4. Eu-cariotique

Question: The greatest diversity of animals in the lake is found in which one of the following zones?

• 1. Limmnetic zone
• 2. Littoral zone
• 3. Profundal zone
• 4. None of these

Question: So far over _____________ number of species of animals are known?

• 1. million
• 2. 1 million
• 3. 1
• 4. 2 million

Question: What is the characteristic feature of consumers?

• 1. Autotroph
• 2. Heterotroph
• 3. Parasite
• 4. Saprophyte

Question: Which of the following organisms have Chitin as a major structural component of their cell wall________________?

• 1. Prokaryotae
• 2. Protoctista
• 3. Plantae
• 4. Fungi

Question: All of the following are involved in nitrification except:

• 1. Nitrobacter
• 2. Nitrosomonas
• 3. Rhizohium
• 4. All of these

Question: DNA or RNA of viruses is enclosed in _______________ coat?

• 1. Protein
• 2. Carbohydrate
• 3. Lipid
• 4. DNA

Question: In most ecosystems the greatest amount of energy flows through the____________?

• 1. Secondary consumers
• 2. Herbivores
• 3. Carnivores
• 4. Decomposers