Q. 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
Q. Venom of cobra attacks on -
1) Nervous System
2) Respiratory system
3) Digestive system
4) Circulatory system
Q. 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
Q. 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
Q. Cotton fibres are made of
1) Cellulose
2) Starch
3) Protein
4) Fats
Q. The first person to see a cell under microscope was
1) Robert Hooke
2) A. V. Leuwenhock
3) T. Schwan
4) M. Schleiden
Q. Mutation is
1) A factor responsible for plant growth
2) A change that is inherited
3) A change which affects the offspring of F2 generation only
4) A change which affects the parents only but never inherited
Q. Edible part of coconut is
1) Seed coat
2) Endocarp
3) Endosperm
4) Carpel wall
Q. Which of the following is studied by palaeontologists?
1) Genes
2) Plants
3) Pollen
4) Fossils
Q. The function of endoplasmic reticulum is
1) Acrosome formation
2) Lysosome formation
3) Synthesis of steroid hormones
4) Secretion of proteins
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