EASY
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IMPORTANT
Earn 100

Identify combination of incorrect statements related to Cyanobacteria
I. Cyanobacteria are referred to as blue-green algae.
II. They perform oxygenic photosynthesis in chloroplasts.
II. The red-colour of red-sea is due to the presence of a cyanobacterial species Trichodesmium erythraeum.
IV. All the cyanobacterial species can fix atmospheric N2 in specialised cells called heterocysts.

50% studentsanswered this correctly

Important Questions on Biological Classification

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IMPORTANT

Match the following lists:

  List-I   List-II
(A) Photoautotroph (I) Nitrosomonas
(B) Chemoautotroph (II) Rhodospirillum
(C) Photoheterotroph (III) Salmonella
(D) Chemoheterotroph (IV) Chlorobium

The correct match is:

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IMPORTANT

Statement (S): In ciliates, conjugation restores the vigour and vitality which are lost due to chromosomal imbalance in the macronuclei due to repeated amitotic divisions.

Reason (R): Conjugation is temporary union of senile ciliates belonging to same mating types. It often prevents exchange of nuclear material.

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IMPORTANT

Assertion (A): Euglenoids have a flexible body.

Reason (R): They have a protein rich layer called pellicle, which makes their body flexible.

Which of the following is true?

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IMPORTANT
Match the following  
 

 List - I

Organism

 

  List - II

Number of Flagella

(a) Trypanosoma (i) Many
(b) Euglena (ii) 2
(c) Giardia (iii) 1
(d) Trichonympha (iv) 8

The correct answer is

HARD
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IMPORTANT

Match the following

Type of Flagellum Example
A) Stichonematic I) Cryptomonas
B) Pantonematic II) Astasia
C) Anematic III) Chlamydomonas
D) Acronematic IV) Monas
    V) Urceolus

The correct match is:

EASY
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IMPORTANT
The difference between holophytic nutrition and holozoic nutrition is: