Q. The space retaining life in any form is called -
1) Biomass
2) Biosphere
3) Lithosphere
4) Hydrosphere
Q. Which one of the following statements is incorrect about muscles in the human body?
1) Muscles work in pairs
2) Muscles become shorter, stiffer, and thicker when contracted
3) Muscles can only push the bone
4) None of the above
Q. The most important cell type associated with the immunity of the body is -
1) platelets
2) lymphocytes
3) RBCs
4) None of the above
Q. Female Anopheles can be distinguished from female Culex because it sits -
1) at an angle with sub-stratum
2) parallel to the surface of the substratum
3) at right angle to the surface of substratum
4) None of the above
Q. In lichen, a chlorophyll-containing partner, _________ live together.
1) fungus and a bacterium
2) alga and a virus
3) alga and a fungus
4) None of the above
Q. The parts of the skeleton that are not as hard as bones and which can be bent are called as -
1) carpals
2) cartilage
3) vertebrae
4) None of the above
Q. Which among the following is a character of chloroplast which makes them qualified self replication?
1) Presence of DNA only
2) Absence of RNA
3) Presence of both DNA and RNA
4) None of the above
Q. The water reaches great heights in trees because of suction pull caused by -
1) absorption
2) transpiration
3) evaporation
4) None of the above
Q. Chlorophyll absorbs ___________ wavelengths of the sunlight.
1) green and blue
2) green and red
3) red and blue
4) None of the above
Q. The stomata open or close due to changes in the -
1) protein composition of cells
2) amount of water in cells
3) position of the nucleus in cells
4) None of the above
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