Lakshya Education MCQs

Question: Regarding the assertion and reason; choose the correct option.

Assertion [A]: The various grades of taxa are interlinked.

Reason [R]: The relations and similarities increase in the descending order (with regard to the size of the taxon).
Options:
A.Assertion [A] is True and Reason [R] is False.
B.Reason [R] is True and Assertion [A] is False.
C.Assertion [A] is True and Reason [R] is True and is a correct explanation for [A].
D.Assertion [A] is True and Reason [R] is True but is an incorrect explanation to [A].
Answer: Option C
: C

Taxa are arranged in ahierarchical manner from a small group of very closely related organisms to a broader group with more dissimilarities. As we go in the ascending order the number of common characteristics decreases and the grade increases and vice-versa, that is in the descending order, the number of common characteristics increases and the grade decreases. For example, any genus (lower grade of classification) has members with more similarities as compared to a family (ahigher grade of classification) which has members with fewer similarities among them.

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More Questions on This Topic :

Question 1. Which one of the following is not a correct statement?
  1.    Key is a taxonomic aid for identification of specimens.
  2.    A museum has a collection of photographs of plants and animals.
  3.    Botanical gardens have a collection of living plants for reference.
  4.    Herbarium houses dried, pressed and preserved plant specimens.
Answer: Option B
: B

A museum has a collection of preserved plant and animal specimens for study and reference.Specimens are preserved in containers or jars in preservative solutions. Plant and animal specimens may also be preserved as dry specimens. Insects are preserved in insect boxes after collecting, killing and pinning. Larger animals like birds and mammals are usually stuffed and preserved. Museums often have collections of skeletons of animals too.
Question 2. Which class do birds belong to?
  1.    Aves
  2.    Amphibia
  3.    Reptilia
  4.    Felis
Answer: Option A
: A

Amphibia, Reptilia, Aves and Mammalia are all classes under superclass Tetrapoda, which further, is classified under subphylum Vertebrata. Birds are grouped under the class Aves. Examples for Amphibia, Reptilia and Mammalia are frog, snake, and bear respectively. Felis is a genus of cats.
Question 3. Which class do birds belong to?
  1.    Aves
  2.    Amphibia
  3.    Reptilia
  4.    Felis
Answer: Option A
: A

Amphibia, Reptilia, Aves and Mammalia are all classes under superclass Tetrapoda, which further, is classified under subphylum Vertebrata. Birds are grouped under the class Aves. Examples for Amphibia, Reptilia and Mammalia are frog, snake, and bear respectively. Felis is a genus of cats.
Question 4. Taxonomic category of ‘Order’ comes in between
  1.    Class and Family
  2.    Kingdom and Class
  3.    Family and Genus
  4.    Phylum and Class
Answer: Option A
: A

The descending order of taxonomic hierarchy is Kingdom, Phylum or Division, Class, Order, Family, Genus, Species. Thus, Order comes between Class and Family.
Question 5. Match the following columns of Taxa with their suffix and choose the correct sequence option.

Column I (Taxa)Column II (suffix)i). Ordera. Hominidaeii). Familyb. Homoiii). Genusc. Sapiensiv). Speciesd. Primates
  1.    i).   ⇒  b., ii). ⇒ c., iii). ⇒  a., iv). ⇒  d.
  2.    i). ⇒  d., ii). ⇒  a., iii). ⇒  b., iv). ⇒  c.
  3.    i). ⇒ a., ii). ⇒ d., iii). ⇒ b., iv). ⇒ c.
  4.    i). ⇒ a., ii). ⇒ d., iii). ⇒ c., iv). ⇒ b.
Answer: Option B
: B

The correct matching pairs for the classification of Humans are:
i). Order(d.) Primates (High level of intelligence)ii). Family(a.) Hominidae (can Walk Upright)iii). Genus(b.) Homo. (humans of different ancestry)iv). Species(c.) sapiens. (modern human)
So the correct option is B: i).
d., ii). a., iii). b., iv). c.

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