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[A] : Amoeba is regarded as the lowest f...

[A] : Amoeba is regarded as the lowest form of animals.
[R] : Body of amoeba consists of a mere mass of protoplasm and resembles a blob of Jelly

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

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The multinucleate slimy mass of protoplasm which forms the body of slime moulds is called as

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read the following statements w.r.t. growth in living organisms. (a).In plants growth by cell division occurs continuously throughout their lifespan. (b) growth is a defining property of living organism. (c) cell division occurs in certain tissues to replace lost cells. (d) increase in body mass is considered as growth. (e) in majority of higher animals and plants and in unicellular organisms, growth and reproduction are mutually exclusive events. select the correct option.

[A] : All invertebrates can keep their body temperature constant all the time . [R] : Amoeba can also keep its body temperature constant as it has well-defined blood vascular system .

Refer to the given passage and answer the following questions. P, Q and R are acoelomate organisms whereas S and T are true coelomates. P possesses cellular level of body organisation whereas others possess tissue and organ level of body organisation. Q possesses special stinging cells called cnidoblasts. R is the first triploblastic animal and has flame cells as excretory organs. The body of S is metamerically segmented whereas T bears jointed appendages and chitinous exoskeleton. Which of the following is incorrect regarding organisms P, Q, R, S and T?

Directions (For the items which follow) : In the following items, each passage consists of six sentences. The first sentence (S_1) and the final sentence (S_6) are given in the beginning. The middle four sentences in each have been removed and jumbled up. These are labelled P, Q, R and S. You are required to find out the proper sequence of the four sentences and mark accordingly on the. Answer Sheet. S_1 : There is no sound more familiar in Calcutta than the clanking of its tramcars. S_6 : Their progress is regarded with the mixture of dread and embarrassment reserved for the approach of a cantankerous old aunt. P : For a growing body of opinion in the city, trams are a symbol of urban blight. Q : It is also an irritant. R : All day and late. into the night the trundling roll of a tram has become a symbol, a portent. S : Slow, overcrowded and unwieldy, they are thought of as obstructionist and outmoded. The proper sequence should be :

Read the following statements and find out the incorrect statements. (a) Movement is one of the significant features of living beings-both plants and animals. b. Streaming of protoplasm in the unicellular organisms like Amoeba is a simple form of movement. c. Movement of cilia, flagella and tentacles are shown by Euglena, Paramoecium and Hydra respectively. d. Human beings can move limbs jaws, eyelids, tongue and ear pinna etc. e. Locomotion is generally for search of food, shelter, mate, suitable breeding grounds and favourable climatic conditions or to escape from enemy/predators.

TRUEMAN BIOLOGY-Animal Kingdom -ASSERTION AND REASON
  1. [A] : In reptiles , lizards show autotomy . [R] : Tail of most lizar...

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  2. [A] : Heloderma is called beaded lizard . [R] : Its scales resemble ...

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  3. Assertion: Kraits ar poisonous snakes. Reason: Belly scales are smal...

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  4. [A] : In the adult bird , only the left ovary is well developed . [R...

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  5. [A] : Rabbit is classified as mammal . [R] : Rabbit possesses mammar...

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  6. [A] : Origin of mammals is polyphyletic . [R] : Mammals are derived...

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  7. [A] : The Ascidian tadpole larva possess all the basic chordate charac...

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  8. [A] : Tail wagging dance is performed for short distances . It conveys...

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  9. [A] : A pair of coxal glands are found in each side of metasoma of sco...

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  10. [A] : Honey bees are social insects known for producing honey and bees...

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  11. Assertion : Cold blooded animals do not have fat layer. Reason : Col...

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  12. [A] : Neoteny is the retention of larval form throughout the life . ...

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  13. [A] : In Parthenogenesis , fertilized egg is stimulated to divide . ...

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

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  15. [A] : Many desert mammals cool the exhaled air in their noses , befor...

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  16. [A] : Amoeba is regarded as the lowest form of animals. [R] : Body o...

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  17. Assertion : Bats and whales are classified as mammals Reason : Bats ...

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  18. [A] : The coelomic cavity of Leech is mostly filled with botryoidal ti...

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  19. [A] : When a foreign object , such as a sand grain gets in between the...

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  20. Assertion: The duck-billed platypus and the spiny anteater, both are e...

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