Algae are useful

(1) Because at least half of the total carbon dioxide fixation on Earth is carried out by algae through photosynthesis.

(2) Algae being photosynthetic can increase the level of dissolved oxygen in their immediate environment

(3) They are primary producers of energy rich compounds and form the basis of the food cycles of all aquatic animals

(4) All of the above

Subtopic:  Algae |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Hydrocolloid is

(1) Water soluble substance

(2) Water holding substance

(3) Hydrogen gas containing substance

(4) Oxygen gas containing substance

Subtopic:  Algae |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Algin

(1) Water holding substance

(2) Obtained from brown algae

(3) Non sulfated water holding substance

(4) All of these

Subtopic:  Algae |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Carrageen

(1) Water holding substance

(2) Obtained from red algae

(3) Sulfated water holding substance

(4) All of these

Subtopic:  Algae |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Agar is not obtained from

(1) Gelidium

(2) Gracilaria

(3) Volvox

(4) All of these

Subtopic:  Algae |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Agar is not used in

(1) To grow microbes

(2) To prepare ice-creams

(3) To prepare jellies

(4) To supplement protein for space travellers

Subtopic:  Algae |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Chlorella is not

(1) An unicellular alga

(2) Rich in proteins

(3) Used as food supplement even by space travellers

(4) Used to grow microbes

Subtopic:  Algae |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Which of the marine algae is not used as food?

(1) Laminaria

(2) Sargassum

(3) Porphyra

(4) Volvox

Subtopic:  Algae |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


The members of chlorophyceae are not

(1) Green algae

(2) Unicellular, colonial or filamentous plant body

(3) Pigments chlorophyll a and b

(4) Pigments are localised in the cytoplasm

Subtopic:  Algae |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level:


Chloroplasts can be discoid, plate-like, reticulate, cup-shaped, spiral or ribbon-shaped in different species. Such variety can be found in

(1) Chlorophyceae

(2) Phaeophyceae

(3) Rhodophyceae

(4) All of these

Subtopic:  Chlorophyceae: Green Algae: I | Chlorophyceae: Green Algae |
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh
To view explanation, please enrol in the course below.
NEET 2021 - Achiever Batch - Aryan Raj Singh

Difficulty Level: