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Test: Basis of Classification - NEET MCQ


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10 Questions MCQ Test Biology Class 11 - Test: Basis of Classification

Test: Basis of Classification for NEET 2024 is part of Biology Class 11 preparation. The Test: Basis of Classification questions and answers have been prepared according to the NEET exam syllabus.The Test: Basis of Classification MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Basis of Classification below.
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Test: Basis of Classification - Question 1

Read the given statements and select the correct option.
Statement 1: All triploblastic animals are eucoelomates.
Statement 2: They have a false coelom.

Detailed Solution for Test: Basis of Classification - Question 1
  • Animals that belong to the phylum Platyhelminthes to Chordata are all triploblastic.
  • But Platyhelminthes and aschelminthes belong to pseudocoelomates.
  • Annelids, arthropods, echinoderms and chordates are under eucoelomates. This means not all triploblastic animals are eucoelomates. 
  • Pseudocoelomates have false coelom while eucoelomate animals only have the true coelom. 

Hence, both statement 1 and statement 2 are incorrect. 

Test: Basis of Classification - Question 2

Which of the following statements is incorrect with regard to bilateral symmetry?

Detailed Solution for Test: Basis of Classification - Question 2

Bilateral symmetry is found in few invertebrates and all vertebrates.

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Test: Basis of Classification - Question 3

Examine the figures of diploblastic (i) and triploblastic (ii) organization in animals given below and identify the labelled parts A to D.

Detailed Solution for Test: Basis of Classification - Question 3

A - Ectoderm
B - Endoderm
C - Mesoglea
D - Mesoderm
So, the correct answer is 'A - Ectoderm, B - Endoderm, C - Mesoglea, D - Mesoderm'.

Test: Basis of Classification - Question 4

Diploblastic and triplo blastic are terms that describe

Detailed Solution for Test: Basis of Classification - Question 4

(i) Diploblastic animals have two germinal layers (ectoderm and endoderm) during embryonic development
Example: Poriferans.
(ii) Triploblastic animals have three germinal layers (ectoderm, mesoderm and endoderm) during embryonic development
Example: Platyhelminthes.

Test: Basis of Classification - Question 5

Select the correct matching of animals, their symmetry, organisation and coelom type.

Detailed Solution for Test: Basis of Classification - Question 5

Platyhelminthes are triploblastic, acoelomate organism showing bilateral symmetry. Ctenophores have borads symmetry, are acoelomates having diploblastic organisation. In echinoderms, larvae have bilateral symmetry whiled add have radial symmetry. They are coelomates with triplobla organisation. Annelids are triploblastic, coelomaterorganism showing bilateral symmetry.

Test: Basis of Classification - Question 6

Assertion (A): Cyanobacteria are considered ancestors of chloroplasts in eukaryotic plants.
Reason (R): They contain chlorophyll a, which is also found in the chloroplasts of green plants.

Detailed Solution for Test: Basis of Classification - Question 6

Answer: A

Solution: The endosymbiotic theory suggests that cyanobacteria, through a symbiotic relationship with early eukaryotic cells, gave rise to the chloroplasts found in modern plants. The presence of chlorophyll a in both cyanobacteria and chloroplasts supports this theory, making the reason a correct explanation of the assertion

Test: Basis of Classification - Question 7

Study carefully the given flow chart and fill in the blanks (A), (B), (C), (D) and (E).

Detailed Solution for Test: Basis of Classification - Question 7

(A) Cellular level
(B) Radial symmetry
(C) Bilateral symmetry
(D) Pseudocoelomates
(E) Coelomates

Test: Basis of Classification - Question 8

Which of the following is correctly matched?

Detailed Solution for Test: Basis of Classification - Question 8

Coelenterates have radial symmetry. Aschelminth are pseudocoelomates. Molluscs do not show metamerit Sponges are diploblastic.

Test: Basis of Classification - Question 9

The given figure shows a cross section of the body of an invertebrate. Identify the animal which has such body plan.

Detailed Solution for Test: Basis of Classification - Question 9

The animals in which the coelom is absent are called acoelomates, for example flatworms (Planaria). In them the space between ectoderm and endodorm is filled with parenchyma derived from mesoderm.

Test: Basis of Classification - Question 10

Which of the following are correct?
(i)Diploblastic:Poriferans, Coelenterates
(ii)Triploblastic:Platyheliminthes to Chorodates
(iii)Acoelomate:Poriferans,Coelenterates,Platyhelminthes
(iv)Pseudocoelomate:Aschelminthes /Roundworms
(v)Eucoelomate:Annelids to Chordates

Detailed Solution for Test: Basis of Classification - Question 10

(i) Diploblastic - Poriferans, Coelenterates
(ii) Triploblastic - Platyhelminthes to Chordates
(iv) Pseudocoelomate - Aschelminthes/Roundworms
(v) Eucoelomate - Annelids to Chordates
So, the correct answer is '(i), (ii), (iv) and (v)'.

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