Question: Usually when tomatoes are plucked they are green. They become red later because the
1. Chloroplast disappears and new chromoplasr arises
2. Chloroplast gets converted into chromoplast
3. Chromoplast gets converted into chloroplast
4. None of the above
Answer: 2
Question: The basic building blocks of proteins are
1. Amino acids
2. DNA
3. Nitrogenous bases
4. RNA
Answer: 1
Question: Which of the following carry genetic information?
1. Carbohydrates
2. Fatty acids
3. Nucleic acids
4. Proteins
Answer: 3
Question: Lipase, an enzyme, break up
1. Fats into fatty acids and glycerine
2. Insulin into fructose
3. Maltose into glucose
4. Peptones into amino acids
Answer: 1
Question: Genetic mutation occurs in
1. DNA
2. RNA
3. Chromosomes
4. Ribosomes
Answer: 1
Question: Bile secreted by the liver gets stored in the
1. Gall blader
2. Duodenum canal
3. Liver itself
4. Spleen
Answer: 1
Question: Excretory organs of insects are
1. Nephridia
2. Malpighian tubules
3. Green glands
4. All of the above
Answer: 2
Question: Which one of the following are colonial in habit?
1. Termites
2. Bed bugs
3. Aphids
4. Locusts
Answer: 1
Question: The food in onion is stored in the form of
1. Cellulose
2. Protein
3. Starch
4. Sugar
Answer: 1
Question: Which of the following is used by green plants for the manufacture of sugar?
1. Carbon dioxide
2. Sunlight
3. Water
4. All of the above
Answer: 4
Question: Venom of cobra attacks on –
1. Nervous System
2. Respiratory system
3. Digestive system
4. Circulatory system
Answer: 1
Question: Bacteria do not need sunlight to grow because –
1. They lack chlorophyll and so they are incapable of making their own food
2. They hate sunlight
3. They use other kinds of light for their food synthesis
4. They prepare their food without the help of sunlight
Answer: 4
Question: Mitosis actually means
1. Division of cytoplasm only
2. Division of nucleus only
3. Reduction in number of chromosomes
4. Both nuclear and cytoplasmic division
Answer: 4