Ncert- science – class 7- Chapter 2 – Nutrition in Animals 1 Welcome to your Ncert- science - class 7- Chapter 2 – Nutrition in Animals 1 1. Choose the correct statement. Incisors help in biting the food. Canines help in tearing the food. All of the above Molars help in grinding the food. None 2. Similar cone-shaped teeth are Thecodont Acrodont Homodont Diphyodont None 3. Which of the following pairs of teeth performs a common function as stated against it? Canines & premolars - Biting Incisors & canines - Holding Premolars & molars - Grinding Molars & incisors - Tearing None 4. What is the length of highly coiled small intestine? 25 feet 21 feet 20 feet 28 feet None 5. In ruminants, bacterial action occurs in the 6. Which of the following phenomena helps in the degradation of complex substances of food into simpler ones? Excretion Ingestion Assimilation Digestion None 7. The tongue is a fleshy muscular organ attached at the back to the floor of the_______. nasal cavity None of the above buccal cavity stomach cavity None 8. Soham is 6 years old. He was playing in the garden. One of his teeth fell as he dashed a pillar. He started crying because he was hurt. He also felt that his teeth will never come back and he will not be able to eat chocolates. How will you console him? Both By telling him that his tooth was milk tooth andBy telling him that his tooth was permanent tooth By telling him that his tooth was milk tooth By telling him that his tooth was permanent tooth By telling him that his tooth will be replaced None 9. Choose the correct order of terms that describes the process of nutrition in ruminants. Swallowing → → Partial digestion → → Chewing of cud → → Complete digestion Swallowing → → Chewing and mixing → → Partial digestion → → Complete digestion Chewing of cud → → Swallowing → → Mixing with digestive juices → → Digestion Chewing of cud → → Swallowing → → Partial digestion → → Complete digestion None 10. The primary dentition in humans differs from permanent dentition in not having one of the following types of teeth: Canine Premolars Molars Incisors None 11. Which one/two part of compound stomach of cattle are rich in methanogens ? Rumen Oppasurn Both A and B Whole compound stomach None 12. Which of the following is NOT a physical process of digestion? Mastication Peristalsis Emulsification Churning None 13. Cud is the name given to the food of ruminants which is Swallowed and undigested. Properly chewed and partially digested. Swallowed and partially digested. Properly chewed and completely digested. None 14. Which of the following is responsible for partial digestion in the mouth of ruminants? High intake of glucose High intake of lactose None of the above High intake of cellulose None 15. In digestion the unused parts of the food are________ defecated utilised None of the above converted None 16. Select the incorrect pair- Contractile vacuole - Helps in excretion in Amoeba Golgi apparatus - Glycosidation of lipids Residual bodies - Autolysis Secondary lysosome - Digestive vacuole None 17. Which of the following animals are involved in the fluid feeding mode? Cow Amoeba Honey bees None of the above None 18. Cellulose digestion in ruminants occurs in ________. Abomasum Omasum Rumen Reticulum None 19. During cellulose fermentation by anaerobic bacteria in rumen and reticulum, cellulose is mainly changed into: Lactic acid CO2 Volatile fatty acids Ethyl alcohol None 20. In ruminant stomach, the rumen is the Largest chamber All the above Chamber having villi with cornified surface Chamber having cellulose fermenting microorganisms None Time's upTime is Up! Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.
