Biological Classification Test

Result

Biological Classification Test - 68

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Weekly Quiz Competition

Question 1
1 / -0

Cellulose is a major component of cell wall of

A
Pseudomonas

B
Saccharomyces

C
Pythium

D
Xanthomonas

Solution

Pythium is a genus in the class Oomycetes, which are also known as water molds. Oomycetes are not true fungi, as their cell walls are made of cellulose.
So the correct option is C.
Question 2
1 / -0

Stage in some fungi having two haploid nuclei per cell is

A
Diplotene

B
Dikaryophase

C
Dikaryotic

D
Both A and B

Solution

The phase of the life cycle of a fungus (as the rusts) characterized by the dikaryotic condition is called Dikaryophase.
So the correct option is B.
Question 3
1 / -0

Which of the following is the largest one?

A
Tree

B
Fungus

C
Vine

D
Animal

Solution

The largest living organism is a single gigantic specimen, the humongous fungus which covers 2,385 acres of the Malheur National Forest in Oregon.
So, option B is the correct option.
Question 4
1 / -0

Match the columns and find the correct option
(a) Choanocytes (i) Arthropoda
(b) Cnidoblasts (ii) Ctenophora
(c) Green gland (iii) Porifera
(d) Nephridia (iv) Coelenterata
(e) Comb plates (v) Annelida

A
(a)-(ii), (b)-(i), (c)-(iv), (d)-(v), (e)-(iii)

B
(a)-(ii), (b)-(iv), (c)-(i), (d)-(v), (e)-(iii)

C
(a)-(v), (b)-(i), (c)-(iii), (d)-(ii), (e)-(iv)

D
(a)-(iii), (b)-(iv), (c)-(i), (d)-(v), (e)-(ii).

Solution

a) Choanocytes- The body wall of Porifera consists of two imperfect layers: outer dermal layer, an inner choanocyte layer which consists of characteristic flagellated collar cells, or choanocytes.
b) Cnidoblasts- The body wall of Coelenterata consists of two distinct layers of cells: epidermis and gastrodermis which has many cells- cnidoblasts, interstitial cells, epitheliomuscular cells.
c) Green gland- In arthropods in class Crustacea excretion takes place by green glands.
d) Nephridia- In annelids, the excretory system consists of coiled tubules, the metanephridia.
e) Comb plates- In Ctenophora ciliary locomotion takes place by special ciliated tracts called comb plates.
So, the correct answer is option D- '(a)- (iii), (b)- (iv), (c)-(i), (d)-(v),(e)- (ii)'.
Question 5
1 / -0

Choose the correct statement :

A
Members of phycomycetes are facultative parasites on plants.

B
Fusion of protoplasms between two motile or non-motile gametes is called plasmogamy.

C
Kingdom plantae includes all eukaryotic chlorophyll containing organisms and non-chlorophyllous oraganisms called plant.

D
Trichoderma belongs to basidiomycetes.

E
Euglenoids include diatoms.
Solution
Correct Answer: B
Explanation:
In the sexual reproduction of fungi, plasmogamy is a significant stage,
In this stage, the cytoplasm of two motile or nonmotile parent cells (usually from the mycelia) fuses together.
The fusion of nuclei doesn't occur.
It brings two haploid nuclei to close together in the same cell. Hence, the correct statement is B. Fusion of protoplasms between two motile or non-motile gametes is called plasmogamy.
Question 6
1 / -0

The most common photobiont from green algae in lichen thallus is :

A
Trebouxia

B
Tetraspora

C
Chlamydomonas

D
Ulothrix

Solution

The majority of lichen photobionts belong to the green algal class Chlorophyceae, with the most common genera being Trebouxia.
So the correct option is A.
Question 7
1 / -0

The correct condition with reference to sexual reproduction in Rhizopus stolonifer is :

A
$$ (+) X (-) = $$ Zygospore

B
$$ (+) X (-) = $$ No zygospore

C
$$ (-) X (-) = $$ Zygospore

D
$$ (+) X (+) = $$ Zygospore

Solution
Question 8
1 / -0

Which is true for fungi ?

A
They are heterotrophs.

B
They lack nuclear membrane.

C
They are mostly unicellular

D
They lack rigid cell wall.

Solution

All fungi are heterotrophs as they derive nutrition from other organisms, living or dead. If from living organisms the nutrition is parasitic and if from dead and decaying matter it is saprophytic
So, the correct answer is 'They are heterotrophs'
Question 9
1 / -0

Which is associated with asexual reproduction in fungi?

A
Ascospores

B
Basidiospores

C
Zygospores

D
Conidiospores

Solution

Conidia are asexually produced spores that are borne externally to the cells that produce them.
So the correct option is D.
Question 10
1 / -0

Number of viruses per ml of sea$$/$$ lake water is__________________.

A
Nil

B
$$10,000 - 100,000$$

C
$$5-10$$ million

D
$$500,000 - 5,000,000$$

Solution

There are approruimately 10 million ($$5-10$$ million) in per ml/sea
This is the standardized data since a viruses can replicate
at a very faster rate

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(a)	Choanocytes	(i)	Arthropoda
(b)	Cnidoblasts	(ii)	Ctenophora
(c)	Green gland	(iii)	Porifera
(d)	Nephridia	(iv)	Coelenterata
(e)	Comb plates	(v)	Annelida

Biological Classification Test - 68

Result

Biological Classification Test - 68

Score

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Rank

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SHARING IS CARING

Question 1

Pseudomonas

Saccharomyces

Pythium

Xanthomonas

Solution

Question 2

Diplotene

Dikaryophase

Dikaryotic

Both A and B

Solution

Question 3

Tree

Fungus

Vine

Animal

Solution

Question 4

(a)-(ii), (b)-(i), (c)-(iv), (d)-(v), (e)-(iii)

(a)-(ii), (b)-(iv), (c)-(i), (d)-(v), (e)-(iii)

(a)-(v), (b)-(i), (c)-(iii), (d)-(ii), (e)-(iv)

(a)-(iii), (b)-(iv), (c)-(i), (d)-(v), (e)-(ii).

Solution

Question 5

Members of phycomycetes are facultative parasites on plants.

Fusion of protoplasms between two motile or non-motile gametes is called plasmogamy.

Kingdom plantae includes all eukaryotic chlorophyll containing organisms and non-chlorophyllous oraganisms called plant.

Trichoderma belongs to basidiomycetes.

Euglenoids include diatoms.

Solution

Question 6

Trebouxia

Tetraspora

Chlamydomonas

Ulothrix

Solution

Question 7

$$ (+) X (-) = $$ Zygospore

$$ (+) X (-) = $$ No zygospore

$$ (-) X (-) = $$ Zygospore

$$ (+) X (+) = $$ Zygospore

Solution

Question 8

They are heterotrophs.

They lack nuclear membrane.

They are mostly unicellular

They lack rigid cell wall.

Solution

Question 9

Ascospores

Basidiospores

Zygospores

Conidiospores

Solution

Question 10

Nil

$$10,000 - 100,000$$

$$5-10$$ million

$$500,000 - 5,000,000$$

Solution

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