Phaeophyceae

Q.

What is the nature of cell walls in diatoms?

Q.

What are compression fossils?

Q.

Holdfast, stipe and frond constitutes the plant body in case of

(a) Rhodophyceae (b) Chlorophyceae

(c) Phaeophyceae (d) All of these

Q.

Food is stored as floridean starch in Rhodophyceae. Mannitol is the reserve food material of which group of algae?

Q.

Who are the sole members of the kingdom Monera?

Q.

Brown colour of phaeophyceae is due to the high concentration of a pigment called -

1. Phycobilin

2. Fucoxanthin

3. Phycocyanin

4. Phycoerythrin

Q.

Are bryophytes asexual?

Q.

What is the cell wall of diatoms called?

Q. In kelps, the plant body is usually attached to the substratum by a

1. stipe
2. holdfast
3. frond
4. roots

Q.

Why are chrysophytes called golden algae?

Q. Which of the following belong to the same group?

1. Ectocarpus, Chlorella, Gracilaria
2. Porphyra, Gelidium, Chara
3. Ectocarpus, Dictyota, Fucus
4. Laminaria, Fucus, Volvox

Q. Flagellated isogametes are seen in

1. Chlamydomonas
2. volvox
3. spirogyra
4. eudorina

Q. Which is correct?

1. Gametes are invariably haploid
2. Spores are invariably haploid
3. Gametes are generally haploid
4. Both spores and gametes are invariably haploid.

Q.

Cell wall of fungi is composed of______.

1. Pectin

2. Chitin

3. Mannans

4. Cellulose

Q. The stored food material of Laminaria is

1. floridean starch
2. laminarin
3. both b and c
4. glycogen

Q.

Ornithine cycle is related with:

1. Reproduction

2. Respiration

3. Excretion

4. Digestion

Q. In majority of sexually reproducing organisms, the gametes produced are of two morphologically distinct types. These gametes are called

1. Hetrogametes
2. Homogametes
3. Antherozoids
4. Archegonia

Q.

What is the cell wall composition of members belonging to class phaeophyceae?

Q.

Why is it called Floridean Starch?

Q. Some characters of algae are given below
A. Floridean starch
B. Sulphated phycocolloids in cell wall
C. Alginic acid
D. Trumpet hypha
E. Haplo-diplontic life cycle
F. Isomorphic alternation of generation
G. Fucoxanthin
H. Phycoerythrin
I. Zygotic meiosis
Which of the given set of characters belongs to Laminaria?

1. A, B, E, F, H
2. C, D, E, F, G, I
3. B, C, D, E, F, G, I
4. C, D, E, G

Q.

In five kingdom classification, blue green algae are included under Monera along with bacteria because

1. they are prokaryotic

2. they are unicellular and microscopic

3. they are photosynthetic

4. all of the above

Q. Which of the following algae grow to great heights?

1. Porphyra
2. Polysiphonia
3. Gracilaria
4. Kelps

Q.

What are the members of Rhodophyceae commonly called?

Q. Which pigment is found in phaeophyceae?

1. Chl a, d and violaxanthin
2. Chl a, c and fucoxanthin
3. None of these
4. $\gamma$ carotene and phycocyanin

Q.

What is the scientific name for red algae?

Q. The most significant reason why fungi are not in the kingdom Plantae is that fungi

1. are chemoorganotrophic heterotrophs.
2. have unicellular and multi-cellular forms.
3. are prokaryotes.
4. are eukaryotes.

Q. The characteristic type of placentation found in the members of caryophyllaceae is

1. free central
2. axile
3. parietal
4. marginal

Q. Match the columns I and II, and choose the correct combination from the options given.

Column I	Column II
(Class)	(Stored food material)
$a.$Chlorophyceae	$i.$Floridean starch
$b.$Phaeophyceae	$ii.$Starch
$c.$Rhodophyceae	$iii.$Laminarin and mannitol

1. $a-i,b-ii,c-iii$
2. $a-ii,b-iii,c-i$
3. $a-i,b-iii,c-ii$
4. $a-ii,b-i,c-iii$

Q.

What is the common name of Chrysophyta?

Q.

Does Gracilaria come under class Chlorophyceae?