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Biological Classification · Question 18

NEET (UG) 2019MCQEasy📈 Topic in 38% papers+4−1
1

Which of the following statement is incorrect?

  1. Conidia are produced exogenously and ascospores endogenously.
  2. Yeasts have filamentous bodies with long thread-like hyphae.
  3. Morels and truffles are edible delicacies.
  4. Claviceps is a source of many alkaloids and LSD.

Answer

(2) Yeasts have filamentous bodies with long thread-like hyphae.

Solution

(1) In ascomycetes, asexual spores (conidia) are produced exogenously on conidiophores, while sexual spores (ascospores) are produced endogenously in asci. Correct.

(2) As per NCERT, fungi are filamentous with the exception of yeasts, which are unicellular. ∴ Yeasts do not have long thread-like hyphae. Incorrect.

(3) Morels and truffles (ascomycetes) are edible and considered delicacies. Correct.

(4) Claviceps (ergot fungus) is a source of many alkaloids and LSD. Correct.

Answer: (2)

NEET (UG) 2019

Keep practising — Biological Classification

2

Match Column-I with Column –II. Choose the correct answer from the options given below :

  1. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
  2. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
  3. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
  4. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
NEET (UG) 2019
3

Which among the following is not a prokaryote?

  1. Mycobacterium
  2. Saccharomyces
  3. Oscillatoria
  4. Nostoc
NEET 2018
4

Select the wrong statement.

  1. Mushrooms belong to basidiomycetes.
  2. Cell wall is present in members of fungi and plantae.
  3. Pseudopodia are locomotory and feeding structures in sporozoans.
  4. Mitochondria are the powerhouse of the cell in all kingdoms except monera.
NEET 2018
5

After karyogamy followed by meiosis, spores are produced exogenously in

  1. Saccharomyces
  2. Neurospora
  3. Alternaria
  4. Agaricus
NEET 2018
6

Which of the following organisms are known as chief producers in the oceans?

  1. Euglenoids
  2. Cyanobacteria
  3. Dinoflagellates
  4. Diatoms
NEET 2018
7

Ciliates differ from all other protozoans in

  1. having a contractile vacuole for removing excess water
  2. having two types of nuclei
  3. using flagella for locomotion
  4. using pseudopodia for capturing prey
NEET 2018
8

Which of the following are found in extreme saline conditions?

  1. Eubacteria
  2. Cyanobacteria
  3. Mycobacteria
  4. Archaebacteria
NEET 2017
9

Viroids differ from viruses in having

  1. DNA molecules without protein coat
  2. RNA molecules with protein coat
  3. RNA molecules without protein coat
  4. DNA molecules with protein coat
NEET 2017
10

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?

  1. Pseudomonas
  2. Mycoplasma
  3. Nostoc
  4. Bacillus
NEET 2017
11

The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the

  1. methanogens
  2. eubacteria
  3. halophiles
  4. thermoacidophiles.
NEET 2016 (Phase 1)

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