1st Year Biology Chapter 12 Notes

• Our comprehensive 1st Year Biology Chapter 12 Notes will ensure you're fully prepared for your exams.
• 1. ……….. taking in of complex food. (a) Egestion (b) Ingestion (c) Digestion (d) None of these
• 2. Embedded in the tentacles are numerous stinging cells called: (a) Gestrovascular cavity (b) Mematocyst (c) Coelenteror (d) None of these
• 3. In planaria each of these main branches of intestive give off numerous small branches which end blindly called: (a) Crop (b) Rectun (c) None of these (d) Caecae
• 4. The ……….. is a short narrow tube called mesenteron stomach. (a) Fore gut (b) None of these (c) Hind gut (d) Mid gut
• 5. Organisms that live upon or within another organism are called: (a) Hosts (b) Pests (c) Predators (d) Parasites
• 6. Which of the following is a parasitic plant? (a) Sarracenia (b) Cuscuta (c) Dionea (d) Drosera
• 7. Lichen is a symbiotic relationship between an alga and: (a) Pteridophyte (b) Angiosperm roots (c) Gymnosperm (d) Fungus
• 8. Root nodules are present in: (a) Gymnosperms (b) Non - leguminous plants (c) All photosynthetic plants (d) Leguminous planst
• 9. Mycorrhizal fungus provides plants minerals such as: (a) Potassium (b) Phosphorus (c) Calcium (d) Magnesium
• 10. All of the insectivorous plants are:  (a) Parasitic (b) Saprotrophs (c) Autotrophs (d) Heterotrophs
• 11. One of the following is not insectivorous plant: (a) Venus - fly trap (b) Cuscuta (c) Pitcher plant (d) Sundew
• 12. The scientific name of Venus - fly trap is: (a) Puccinia graminis (b) Drosera intermedia (c) Saracenia pupurea (d) Dionaea muscipula.
• what is stomach? Ans: It is enlargement of the anterior region of the gut. In vertebrates it follows oesophagus and usually has muscular walls which are helpful in crushing the food, and the lining cells secrete pepsin and hydrochloric acid.
• Define nutrition. Ans: Nutrition is the sum total of all the processes concerned with growth, repair and maintenance of the living organism as a whole or its constituent parts.
•  How do the farmers replenish the deficiency of nutrient salts? Ans: The deficiency of nutrient salts is replenished by adding animal manure, sewage sludge or artificial chemical fertilizers to the soil.
• Q6: Describe digestion of food in small intestine and also explain absorption of food.
• Q7: Describe absorption and digested food in small intestine of man. (v.imp)
• Q8: Describe the role of pancreas and liver in food digestion in Human.
• Q9: Give the role of large intestine in human beings.
• Q10: Describe any two common diseases related to nutrition.
• Q11: Write a note on obesity and dyspepsia.
• Q12: Write a note on food poisoning. (v.imp)
• Q13: Write notes on the following. (i). Obesity (ii). Bulimia nervosa
• Q14: Describe nutrition in insectivorous plants. Q15: Discuss any four methods of nutrition in animals.
• Q16: Write a note on parasitic nutrition.
• Q1: Plants absorb minerals in their ……….. form, as found in the soil ……….. .
• Q2: The stomach functions to ……….. ,…………. and food and its ……… .
• Q3: The structure in the mouth that prevents food from entering the nasal cavities is the ….. .
• Q4: In ……….. the trapped insects are decomposed by bacteria.
• Q5: Chlorosis is usually caused by insufficien ……….. .
• Q6: A plant requires ……….. for holding its cell together.