CLASS-X BIOLOGY WOKSHEET
MULTIPLE CHOICE QUESTIONS
1. Which of the following events in the mouth cavity will be affected if salivary amylase is
lacking in the saliva?
(a) Starch breaking down into sugars. (b) Proteins breaking down into amino acids.
(c) Absorption of vitamins. (d) Fats breaking down into fatty acids and glycerol.
2. Which region of the alimentary canal absorbs the digested food?
(a) Stomach (b) Small intestine (c) Large intestine (d) Liver
3. The contraction and expansion movement of the walls of the food pipe is called:
(a) translocation (b) transpiration (c) peristaltic movement (d) digestion
4. The exit of unabsorbed food material is regulated by
(a) liver (b) anus (c) small intestine (d) anal sphincter
5. The breakdown of pyruvate to give carbon di-oxide, water and energy takes place in
(a) cytoplasm (b) mitochondria (c) chloroplast (d) nucleus
6. Name the substances whose build up in the muscles during vigorous physical exercise may
cause cramps?
(a) Ethanol + Carbon dioxide + Energy (b) Lactic acid + Energy
(c) Carbon dioxide + Water + Energy (d) Pyruvate
7. Which plant tissue transports water and minerals from the roots to the leaf?
(a) Xylem (b) Phloem (c) Parenchyma (d) Collenchyma
8. The movement of food in phloem is called:
(a) transpiration (b) translocation (c) respiration (d) evaporation
9. A blood vessel which pumps the blood from the heart to the entire body:
(a) artery (b) capillary (c) Vein (d) Haemoglobin
10. Name a circulatory fluid in the human body other than blood.
(a) Platelets (b) RBC (c) Lymph (d) Plasma
11. Name the tube which connects the kidneys to the urinary bladder.
(a) Urethra (b) Nephron (c) Tubule (d) Ureter
12. Which part of nephron allows the selective reabsorption of useful substances like glucose,
amino acids, salts and water into the blood capillaries?
(a) Tubule (b) Glomerulus (c) Bowman’s capsule (d) Ureter
13. Which is the correct sequence of body parts in the human alimentary canal?
(a) Mouth → stomach → small intestine → large intestine → oesophagus
(b) Mouth → oesophagus → stomach → small intestine → large intestine
(c) Mouth → stomach → oesophagus → smallintestine → large intestine
(d) Mouth → oesophagus → stomach → large intestine → small intestine
14.When air is blown from mouth into a test-tube containing lime water, the lime water turned
milky due to the presence of
(a) oxygen (b) carbon dioxide (c) nitrogen (d) water vapour.
15.The inner lining of stomach is protected by one of the following from hydrochloric acid.
Choose the correct one.
(a) Pepsin (b) Mucus (c) Salivary amylase (d) Bile
16. Rings of cartilage present in the throat ensure that
(a) air is filtered (b) air is at room temperature
(c) air passage does not collapse (d) air is free of microbes
17.The excretory unit of the human excretory system is known as
(a) nephridia (b) neuron (c) nephron (d) kidneys
18.The mode of nutrition found in fungi is
(a) parasitic nutrition (b) holozoic nutrition (c) autotrophic nutrition (d) saprotrophic
nutrition
19.The site of photosynthesis in the cells of a leaf is
(a) chloroplast (b) mitochondria (c) cytoplasm (d) protoplasm
20.Glycolysis process occurs in which part of the cell?
(a) Cytoplasm (b) Nucleus (c) Mitochondria (d) Chloroplast
21.Normal blood pressure (systolic/diastolic) is
(a) 120/80 mm of Hg (b) 160/80 mm of Hg (c) 120 60 mm of Hg (d) 180/80 mm of Hg
22.Blood pressure is measured by an instrument called
(a) barometer (b) sphygmomanometer (c) photometer (d) manometer
23.Which blood vessel takes blood away from the kidney?
a) Renal portal vein b) renal vein c)afferent arteriole d) efferent arteriole.
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