Home
Class 12
BIOLOGY
[A] : The signet ring trophozoite of mal...

[A] : The signet ring trophozoite of malarial parasite ingests major part of cytoplasm of erythrocytes and form a food vacuole into which it secretes digestive enzymes .
[R] : The enzymes cause breakdown of Haemoglobin into hematin and protein contents .

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ANATOMY OF FLOWERING PLANTS

    TRUEMAN BIOLOGY|Exercise MULTIPLE CHOICE QUESTIONS|190 Videos

  • ANIMAL KINGDOM -NONCHORDATES

    TRUEMAN BIOLOGY|Exercise MCQ|291 Videos

Similar Questions

Explore conceptually related problems

The partially digested food coming from the stomach of a person enters a long and narrow organ A in his body. The organ A receives the secretions of two glands : liver and secretes a greensih yellow liquid B which is normally stored in the organ C. Pancreas secretes pancreatic juice which contains three digestive enzymes D, E and F. The intestinal juice completes the process of digestion of food. The inner wall of organ A has million of tiny finger-like projections G which help in the rapid absorption of digested food into blood stram. The undigested part of food then passes into wider tube H which absorbs most of the water from undigested food. The last part of tube H called I stores this undigested food (or waste) for some time. The undigested food is then passed out though opening J as faeces in the process known as K. (a) Name the organ A. (b) Name (i) liquid B, and (ii) organ C (c) What are the digestive enzymes D, E and F ? (d) Name (i) tube H (ii) part I (iii) opening J, and (iv) process K

Read the following statements and identify the correct options given A. Sap vacuoles-contain digestive enzymes with the help of which nutrients are digested options given B. Contractile vacuoles - take part in osmoregulations and excretion C. Food vacuoles - store and concentrate mineral salts as well as nutrients D. Air vacuoles - store metabolic gases and help in buoyancy of cells

Indicate whether each of the following statements is true (T) or false (F): (i) Bilirubin is derived from haemoglobin (ii) The stomach has the lowest pH. (iii) The liver contains lipid emulsifer. (iv) Lack of castle,s interinsic gastric factor causes pemicious anaemia. (v) The nonessential amino acids cannot be synthesized in the body cells. (vi) Large intestine secretes many enzymes. (vii) Insects have proteases to digest animals fibrous proteins (viii) All proteases function in the lumen of samll intestine.

Read the following statements (A-D) (A) The stomach stores the food for 4-5 hours. (B) The food mixes throughly with the acidic intestinal juice (C ) Trypsinogen is activated by an enzyme-enterogastrone, secreted by the intestinal mucosa (D) Renin is enzyme found in gastric juice of infants which helps in digestion of milk protein How many of the above statements are wrong ?

Read the following statements A-D (a) The stomach stores the food for 4-5 hours (b) The food mixes throughly with the acidic intestinal juice (c) Trypsinogen is activated by an enzymeenterogastrone, secreted by the intestinal mucosa (d) Renin is enzyme found in gastric juice of infants which helps in digestion of milk protein How many of the above statements are wrong?

Read the following passage and answer the questions given after it. Passage: We are all born milk drinkers. Babies’ guts produce the enzyme lactase, which breaks down lactose, the sugar in cow’s milk, into the simpler sugars — glucose and galactose. But for the majority of humans, production of the enzyme lactase plummets after weaning. “From a human perspective — no, to go further than that, from a mammalian perspective — the norm is to be able to tolerate your mother’s breast milk, and then as you get past infancy, to stop producing lactase and become lactose intolerant,” said Adam Fox, a consultant paediatric allergist at Guy’s and St Thomas’s hospitals, and one of the UK’s leading food allergy experts. “Then you’ve got a small group of humans that have a mutation which means they maintain production of lactase into adulthood. Northern Europeans, the Masai [in east Africa], some Arab groups as well. But that’s the exception, not the rule.” That schism between milk-drinkers and the rest — actually a series of independent genetic mutations — appears to have occurred about 10,000 years ago, around the time humans were domesticating farm animals. It is the reason that in countries such as the UK, Sweden and Ireland, more than 90% of adults can drink milk without suffering any ill effects, but worldwide, more than two-thirds of all adults are considered lactose intolerant. For lactose-intolerant people, a glass of milk can induce bloating, stomach pains and diarrhoea. (Lactose intolerance should not be — though often is — confused with cow’s milk allergy, an immune response to the proteins in cow’s milk that affects around 1% of UK adults.) Even in northern Europe, milk as we know it is a recent phenomenon. Fresh milk, left unrefrigerated, spoils quickly and can harbor a variety of deadly pathogens, including E Coli and tuberculosis. For most of history milk was either consumed within moments of milking or processed as cheese or yoghurt. Few drank milk in its liquid form. “The Romans considered it a sign of barbarism,” said Mark Kurlansky, author of Milk! A 10, 000—Year FoodE'acas. “The only people who drank milk were people on farms, because they were the only ones who could get it fresh enough.” Even then, cow’s milk was considered inferior to alternatives such as goat or donkey. In the 19th century, “swill milk” — so called because cows were fed the filthy runoff from inner-city breweries, turning their milk blue — was linked with thousands of infant deaths. Only in the early 20th century, with the introduction of mandatory pasteurization — in which milk is heated to kill off any bacteria before bottling — did milk become safe enough for most people to drink regularly.) Most adults in India continue to have milk without suffering any of the issues outlined in the passage because ...............

TRUEMAN BIOLOGY-Animal Kingdom -ASSERTION AND REASON
  1. [A] : The signet ring trophozoite of malarial parasite ingests major p...

    Text Solution

    |

  2. [A] : Protozoans have no physiological division of labour . [R] : Th...

    Text Solution

    |

  3. [A] : Endomixis is Paramecium involves total internal nuclear reorgan...

    Text Solution

    |

  4. [A] : Sponges are primitive multicellular animals that probably evolve...

    Text Solution

    |

  5. [A] : Annelids , Arthropods and mollusks are protostomial coelomates ....

    Text Solution

    |

  6. [A] : The body cavity of earthworm is a true coelem . [R] : It is li...

    Text Solution

    |

  7. [A] : Pearl is formed when a foreign particle gets in between shell an...

    Text Solution

    |

  8. [A] : Fasciola is hermaphrodite . [R] : Gonads are well developed an...

    Text Solution

    |

  9. [A] : There are 10 tidemanns bodies in ambulacral system of echinoderm...

    Text Solution

    |

  10. [A] : Termites and ants are social insects . [R] : They make fungus ...

    Text Solution

    |

  11. Assertion(A): In sponges, archaeocytes are totipotent. Reason( R): T...

    Text Solution

    |

  12. [A] : The honey is a vital food for animals including man . [R] : Th...

    Text Solution

    |

  13. [A] : Leaches secrete hirudin from their salivary glands . [R] : Hir...

    Text Solution

    |

  14. [A] : All invertebrates can keep their body temperature constant all t...

    Text Solution

    |

  15. [A] : In Taenia solium , bladder worm is also known as cysticercus . ...

    Text Solution

    |

  16. [A] : Earthworm obtain oxygen for respiration through moist skin . The...

    Text Solution

    |

  17. [A] : Presence of alimentary canal would not have suited the mode of l...

    Text Solution

    |

  18. [A]: Development in cockroach is termed as retrogressive metamorphosis...

    Text Solution

    |

  19. [A] : All the gills of Palaemon are phyllobranchs . [R] : Each gill ...

    Text Solution

    |

  20. [A] : Renal-sac of Prawn functions in same manner as vertebrate kidney...

    Text Solution

    |