Quiz 3
1. Osmosis 2. Transport in Plants 3. Heart 4. Support 5. Eyes
Osmosis
Question 1 Osmosis must take place in living cells. True False Question 2 When a cell is boiled, the cell membrane cannot be selectively permeable again. True False Question 3 When a cell with a lower water potential is put into a sucrose solution, there is a net movement of sucrose solution into the cell. True False Question 4 A fully turgid cell can become plasmolysed when it is put into a very concentrated salt solution. True False Question 5 When there is a net movement of water molecules from a region to another region, the phenomenon is called osmosis. True False Question 6 When a plant cell is placed in distilled water, it will not swell and burst because of the rigid cell wall. True False Question 7 An ordinary animal cell will burst when it is placed in distilled water for a long time. True False Question 8 The outermost skin cells will not burst when they are placed in distilled water because they are cornified to prevent the water gain. True False Question 9 Osmosis is a kind of diffusion. True False Question 10 When a plant cell is fully plasmolysed, its water potential is equal to the water potential of the solution outside. True False Question 11 When a plant cell is fully turgid, at that moment, the water potential is equal to the water potential of distilled water. True False Question 12 Root hair cells absorb water from soil into the its vacuole by osmosis only. True False Question 13 Water moves from xylem to mesophyll cells by osmosis only. True False Question 14 Osmosis is a passive process. It does not require energy from the cells. True False Question 15 In a tissue, different cells may have different water potentials. True False Click here to play again
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Transport in Plants
Question 1 Mature xylem vessels are dead cells. True False Question 2 The wall of xylem vessel is one cell thick. True False Question 3 Xylem vessels transport water from roots to leaves and from leaves to roots. True False Question 4 The wall of xylem vessels are lignified. This is to harden the cells to prevent the vessels from being collapsed. True False Question 5 Mature xylem cell is hollow. It has no cell wall, nucleus and cytoplasm. True False Question 6 Root hair cells can absorb water by osmosis or active transport. True False Question 7 The part which transports organic nutrients in plants is called pholem. True False Question 8 Transpiration is a process of water loss in form of water vapour from aerial parts of the plants by evaporation. True False Question 9 Water is moved in xylem in continuous column by the high adhesion force of water. True False Question 10 The method of transport of organic food produced by leaves in phloem is called translocation. True False Question 11 Usually, the carbohydrates transported in phloem are sucrose. True False Question 12 Phloem tissue consists of sieve plate and companion cells. True False Question 13 Sieve cells are hollow tubes, so that it provides less resistance to movement of food. True False Question 14 Both xylem and phloem are parts of vascular tissues. True False Question 15 Ferns, gymnosperms and flowering plants have vascular tissues. True False Click here to play again
Heart
Question 1 Our heart is in the abdomen and is protected by our rib cage. True False Question 2 Our heart is divided into 4 chambers by valves. True False Question 3 Right ventricle is separated from left one by bicuspid valves. True False Question 4 The wall of right ventricle is thicker than that of left ventricle. True False Question 5 The function of septum is to increase the carrying capacity of blood indirectly. True False Question 6 When tricuspid valves are closed, a heart sound is produced. True False Question 7 The order of heart contraction is contraction of right auricle, right ventricle, left auricle and left ventricle. True False Question 8 The blood flows into the heart through vena cavae and pulmonary veins. True False Question 9 The blood vessels which supply oxygen to heart muscle cells are the coronary arteries. True False Question 10 The heart strings connect the bicuspid and tricupid valves together to prevent valves turning inside out. True False Question 11 Systole means contraction. Diastole means relaxation. True False Question 12 Normally, diastole lasts longer than systole. True False Question 13 Blood from pulmonary veins drain into right auricle. True False Question 14 Blood pressure in the blood vessels is produced by the pumping action of the heart. True False Question 15 The structure of heart in fish is different from that in mammals. True False Click here to play again
Support
Question 1 Support is a method to keep shape and position of an organism or any part in the body. True False Question 2 For the whole body of mammal, support is done by skeletal system only. True False Question 3 Ligaments play no role in support but it can connect two bones together. True False Question 4 Bones are non-living things because they consist of mineral salts. True False Question 5 In fish, streamlined body shape helps the fish to swim faster. True False Question 6 When bones are placed in dilute acid, the bones become soft because acid dissolves minerals out. True False Question 7 When bones are burnt, the bones become brittle. The organic matter is burnt, leaving ash behind. True False Question 8 Cartilages, like bones can be used for support. True False Question 9 Ligaments help to prevent dislocation of joint. True False Question 10 Ribs are parts of axial skeleton. True False Question 11 Bones in the tail of a mouse are vertebrae. True False Question 12 Appendicular skeleton has no function in protection of internal organs. True False Question 13 Bones can store calcium salts. True False Question 14 Bone is hollow to reduce the weight of the bone but retain the hardness. True False Question 15 A herb is mainly supported by the hardness of thick-walled cells. True False Click here to play again
Eyes
Question 1 The eye balls are protected by the skull. True False Question 2 The eyebrow prevents dust entering the eyes. True False Question 3 The front part of sclera is coverd by cornea. True False Question 4 The choroid of the eye can prevent total internal reflection. True False Question 5 The aqueous humour is in the anterior chamber. True False Question 6 No rod cells are found in yellow spot. True False Question 7 The image formed in the retina must be diminished, inverted and real. True False Question 8 Rod cannot color but cone can. True False Question 9 The light can be converged by the lens only. True False Question 10 The visual purple is formed from vitamin C. True False Question 11 When we see a distant object, the tension of suspensory ligament increases. True False Question 12 For our eyeball, only pupil size can control how much light entering the eyes. True False Question 13 Three types of cones: red, blue and green. True False Question 14 In short-sighted eye, when seeing distant object, image falls behind retina. True False Question 15 Color-blindness is inherited. True False Click here to play again
