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Which of the following possesses electric organs and belongs t
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Which of the following possesses electric organs and belongs to class chondrichthyes?

A

B

C

D

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Xtract Objective Biology for NEET (Disha)

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Animals that belong to class chondrichthyes are marine with streamlined body and have cartilaginous endoskeleton. Some of them have electric organs (e.g., ) and some possess poison sting (e.g., ).
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Practice questions from Xtract Objective Biology for NEET (Disha)

Question 1
Medium
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A student brought home a strange animal which he found outside under a rock. It had moist skin, a complete digestive tract, a ventral nerve cord, and had gone through torsion. Identify the phylum of the animal.
  1. Porifera
  2. Annelida
  3. Mollusca
  4. Echinodermata
Topic

Topic:

Animal Kingdom

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Xtract Objective Biology for NEET (Disha)

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Question 2
Easy
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Match the organisms given in column-I with their common name given in column-II and choose the correct option.
  1. A – II; B – III; C – I; D – IV
  2. A – II; B– IV; C – I; D – III
  3. A – II; B – I; C – III; D – IV
  4. A – II; B – I; C – III; D – IV
Topic

Topic:

Animal Kingdom

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Book:

Xtract Objective Biology for NEET (Disha)

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Question 3
Medium
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Which of the following features distinguish mammals from other vertebrates ?
  1. Hairy skin and oviparity
  2. Hairy skin and mammary glands
  3. Mammary glands and teeth
  4. Pinna and teeth
Topic

Topic:

Animal Kingdom

Book

Book:

Xtract Objective Biology for NEET (Disha)

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Question 4
Easy
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Which one of the following pairs of animals comprises ‘Jawless fishes’?
  1. Mackerels and Rohu
  2. Lampreys and Hagfishes
  3. Guppies and Hagfishes
  4. Lampreys and Eels
Topic

Topic:

Animal Kingdom

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Book:

Xtract Objective Biology for NEET (Disha)

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Practice more questions from Animal Kingdom

Question 1
Hard
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Assertion : Holoblastic cleavage with almost equal sized blastomeres is a characteristic of placental animals.
Reason : Eggs of most mammals, including humans, are of centrolecithal type. 
  1. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  2. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  3. If Assertion is true but Reason is false.
  4. If both Assertion and Reason are false.
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Animal Kingdom

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Book:

NEET Question Bank i Biology for AIIMS (Disha)

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Question 2
Easy
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Which of the following possesses electric organ and belongs to class Chondrichthyes?
Topic

Topic:

Animal Kingdom

Book

Book:

Xtract Objective Biology for NEET (Disha)

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Question 3
Medium
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Reptiles are vertebrates that exhibit amniotic development, possess epidermal scales made up of characteristic protein, paired limbs which are pentadactyl, skull with occipital condyle, 3 or 4 chambered heart, etc. The major groups of class-Reptilia includes turtles, snakes, crocodiles and lizards. Reptiles evolved from amphibians about 320 million years ago. These ectothermal animals respire through lungs, possess well-developed CNS, PNS and ANS, show regeneration, reproduce sexually and have internal fertilisation.

Identify the incorrect characteristic about the animal shown in the given tree lizard.
I. It is commonly called tree lizard.
II. It is poikilothermic.
III. It shows cloacal respiration.
IV. It exhibits direct development.
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  2. Only III
  3. Only IV
  4. I, III and IV
Topic

Topic:

Animal Kingdom

Book

Book:

CBSE New Pattern Biology Class 11 for 2021-22 Exam MCQs based book for Term 1

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Question 4
Easy
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In Echinodermata, tube feet are related with
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  2. Excretory system
  3. Respiratory system
  4. Reproductive system
Topic

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Animal Kingdom

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Alkaptonuria is an inborn error of metabolism, caused by defects in an enzyme in the pathway that breaks down tyrosine (see Section 14.1). Humans who are homozygous for one of these mutations make nonfunctional enzyme and accumulate the enzyme's substrate, homogentisic acid, which causes their disease symptoms. In 1996 researchers in Spain cloned and sequenced the gene for the enzyme, and characterized several mutant alleles. Here is the wild-type coding strand sequence for part of the gene, with the amino acid sequence of the protein below: Here is the sequence for one of the mutant alleles: a. What is the amino acid sequence produced by the mutant allele? What type of mutation is this:silent, nonsense, missense, or frame-shift?b. Why is this mutation likely to affect the function of the enzyme? (Hint: see Section 3.2, especially Table 3.2.)c. The mutation creates a new recognition site for the restriction enzyme How would you take advantage of this new site to screen individuals for the mutant allele?
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Question 4
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Question Text
Which of the following possesses electric organs and belongs to class chondrichthyes?
TopicAnimal Kingdom
SubjectBiology
ClassClass 11
Answer TypeText solution:1
Upvotes58