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 in specialised cells called heterocysts.
(a)
(b)
(c)
(d)

50% studentsanswered this correctly

Important Questions on Biological Classification
MEDIUM
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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 In ciliates, conjugation restores the vigour and vitality which are lost due to chromosomal imbalance in the macronuclei due to repeated amitotic divisions.
Reason Conjugation is temporary union of senile ciliates belonging to same mating types. It often prevents exchange of nuclear material.

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Choose the correct statements among the following.

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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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Match the following
List - I Organism |
List - II Number of Flagella |
||
(a) | Trypanosoma | (i) | Many |
(b) | Euglena | (ii) | |
(c) | Giardia | (iii) | |
(d) | Trichonympha | (iv) |
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:

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IMPORTANT
Actinophrys has

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The difference between holophytic nutrition and holozoic nutrition is:
