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Q12 (CDS-I/2015) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Animal diversity behaviour Answer Verified

Which one among the following statements is not true for Mammals ?

Result
Your answer: —  Â·  Correct: C
Explanation

Mammals are characterized by several distinct biological features. They possess hair or fur on their bodies, which serves functions such as insulation and waterproofing [1]. While most mammals are viviparous (giving birth to live young), a specific subclass known as monotremes, which includes the duck-billed platypus and echidnas, are oviparous and lay eggs [2]. Mammals have also adapted to various environments, with several species being aquatic, such as dolphins, whales, and seals [3]. However, the statement regarding their heart is incorrect. Mammals possess a four-chambered heart and a double loop circulatory system to support their high metabolic needs as warm-blooded (endothermic) animals [4]. A three-chambered heart is typical of most reptiles and amphibians, whereas all mammals have two atria and two ventricles to ensure efficient oxygenation.

Sources

  1. [1] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 9: Indian Biodiversity Diverse Landscape > Mammals > p. 154
  2. [2] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 12: Animal Diversity of India > 12.3.r. Egg Laying Mammals > p. 190
  3. [3] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 2: PLANT AND ANIMAL KINGDOMS > Table 2.1 (Contd.) > p. 14
  4. [4] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 29: Environment Issues and Health Effects > 29.3.4. Greeenwashing > p. 419
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SIMILAR QUESTIONS

IAS · 2004 · Q12 Relevance score: 0.80

Consider the following statements: 1. Toothless mammals such as pangolins are not found in India. 2. Gibbon is the only ape found in India. Which of the statements given above is are correct?

CDS-I · 2005 · Q105 Relevance score: 0.41

Assertion (A) : The mammals we see around do not hibernate. Reason (R) : Unlike other kinds of animals, mammals feed their young ones with milk.

IAS · 2002 · Q127 Relevance score: 0.30

Which one of the following statements is not correct ?

CDS-I · 2002 · Q45 Relevance score: -0.41

Which one of the following statements is correct?