Importance of Algae

Q.

What is the difference between enriched media and enrichment media?

Q. Food stored in which of the following algae is similar to glycogen in structure?

1. Polysiphonia
2. Chara
3. Laminaria
4. Fucus

Q. Identify the algae used as a food supplement by space travellers.

1. Spirulina
2. Chlorella
3. Both a and b
4. Laminaria

Q.

Write a note on the economic importance of algae and gymnosperms.

Q.

What is the reserve food in rhodophyceae?

Q.

What are the photosynthetic pigments of bacteria?

Q.

Agar is commercially obtained from

1. Brown algae

2. Red algae

3. Blue green algae

4. Green algae

Q.

Where is agar agar obtained from?

Q. Commercially used carrageenan comes from algae

1. that store food as mannitol
2. that have phycoerythrin pigment
3. that store starch in pyrenoids
4. that have fucoxanthin pigment

Q. The largest algae belongs to class

1. phaeophyceae
2. chlorophyceae
3. rhodophyceae
4. leucophyceae

Q.

Epixylic fungi are

1. that grow on dung

2. that grows on wood

3. that grow on hair

4. that grows on cloth

Q. Phycobilins occur in

1. Green algae
2. Blue-green algae
3. Red algae
4. Both (b) and (c)

Q. Describe the economic importance of algae with suitable examples. (any five)

Q. Identify the algae used as a food supplement by space travellers.

1. Spirulina
2. Chlorella
3. Both a and b
4. Laminaria

Q.

Make a lsit of algae and fungi that have a commercial value as source of food, chemicals, medicines and fodder.

Q. Commercially used carrageenan comes from algae

1. that store food as mannitol
2. that have phycoerythrin pigment
3. that store starch in pyrenoids
4. that have fucoxanthin pigment

Q.

Agar is obtained from red algae.

1. True
2. False

Q. Solid culture medium for cell culture is obtained from:

1. Green algae
2. Brown algae
3. Red algae
4. Blue green algae

Q. Which among the following green algae is used by the space travellers as protein supplement?

1. Chlorella
2. Gelidium
3. Gracilaria
4. Laminaria

Q. Agar is commercially obtained from____________.

1. Blue green algae
2. Brown algae
3. Red algae
4. Green algae

Q. Agar agar is obtained from

1. Green algae
2. Brown algae
3. Red algae
4. Blue green algae

Q. Agar-agar is obtained from algae belonging to the class:

1. Phaeophyceae
2. Rhodophyceae
3. Chlorophyceae
4. Bacillariophyceae

Q. Match the lists.

	$I$		$II$
$\left(a\right)$	Agar agar	$1.$	Saccharomyces
$\left(b\right)$	Biofertilizers	$2.$	Basidiomycetes
$\left(c\right)$	Mushrooms	$3.$	Red algae
$\left(d\right)$	Vitamin $B$	$4.$	Blue-green algae
		$5.$	Vibrio

1. $a-4,b-2,c-3,d-5$
2. $a-5,b-1,c-4,d-2$
3. $a-2,b-3,c-5,d-4$
4. $a-3,b-4,c-2,d-1$

Q. Study the following lists.
List-I List-II
(A) Agar-Agar (I) Saccharomyces
(B) Biofertilizers (II) Basidiomycotina
(C) Mushrooms (III) Red algae
(D) B-Vitamins (IV) Blue green algae
(V) Vibrio
The correct match is

1. (A)- (V), (B)- (I), (C)- (IV), (D)- (II)
2. (A)- (IV), (B)- (II), (C)- (III), (D)- (V)
3. (A)- (II), (B)- (III), (C)- (V), (D)- (IV)
4. (A)- (III), (B)- (IV), (C)- (II), (D)- (I)

Q. Agar is commercially got from

1. Green algae
2. Blue-green algae
3. Brown algae
4. Red algae

Q. Two algae which produce agar-agar are

1. Nostoc and Anabaena
2. Volvox and Vaucheria
3. Harveyella and Porphyra
4. Gracilaria and Gelidium

Q. From which of the following algae, agar is commercially extracted:
(a) Gracilaria
(b) Fucus
(c) Sargassum
(d) Gelidium
(e) Turbinaria

1. $b,c$
2. $a,d$
3. $d,e$
4. $a,b$
5. $c,e$

Q.

Protein-rich algae are:

1. Polysiphonia

2. Spirulina

3. Gelidium

4. Cosmarium

Q. Which of the following algae produces agar-agar?

1. Gracilaria
2. Gelidium
3. Chlamydomonas
4. Both A and B

Q. The gell -forming substance called agar is extracted from _______ algae.