Biological Classification Test

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Biological Classification Test - 90

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Question 1
1 / -0

Torula stage of Mucor is rich in which of the following medium?

A
Sugar

B
Pesticide

C
Antibiotic

D
All of the above

Solution

In some species of Mucor, e.g., Mucor racemosus, if grown in liquid media with a high concentration of sugar, the hyphae break up into short segments, known as oidia. These oidia further increase by budding in yeast like fashion. This is called as torula condition. The sugar is fermented into alcohol during this phase.
Thus, the correct answer is option A.
Question 2
1 / -0

Association between blue green algae and fungi is called as

A
Lichens

B
Xylem

C
Phloem

D
Predation

Solution

Lichen is the association between blue green algae and fungi. Both the partners benefit from this relationship hence, it is called as mutualistic symbiosis. In this relationship, algae being photosynthetic organism produce food and fungi protect algae as well gather moisture and anchor the lichen body. Hence, the correct answer is option A.
Question 3
1 / -0

Kingdom protista is not considered natural one because

A
It has diverse mode of form, structure and nutrition.

B
Of organisms like slime mould, which are totally different from all other organisms.

C
Its members are from different evolutionary lines.

D
All of the above.

Solution

Eukaryotic kingdoms - plantae, fungi, and animalia are each believed to be monophyletic. That is, all plants evolved from one ancestral plant, all animals from one ancestral animal, and all fungi from one ancestral fungus. The protista, however, are not; they are almost certainly polyphyletic and did not arise from a single ancestral protist. Rather, the protista are a category of miscellaneous eukaryotes, not closely related to each other and not sharing many characteristics, but not fitting any other kingdom of life. Hence, protista is an artificial grouping of organisms.
Question 4
1 / -0

Saprolegnia is a best example for demonstrating

A
Heterospory

B
Dichogamy

C
Herkogamy

D
Diplanetism

Solution

The phenomenon, of having two different zoospore types is called as diplanetism, and the second type of zoospore is called as a diplanospore, or secondary zoospore. Saprolegnia, grows on rotting organic matter, such as dead fish or dead seeds floating in ponds is a best example for diplanetism.
Thus, the correct answer is option D.
Question 5
1 / -0

Photosynthetic bacteria have

A
Photo system I

B
Photo system II

C
Both A and B

D
None of these

Solution

The plants and cyanobacteria (which use water as a hydrogen donor and produce oxygen) have photosystems I and II, whereas the less highly evolved other photosynthetic bacteria (which do not use water as their hydrogen donor and do not produce oxygen) have only photosystem I. For oxygenic photosynthesis, both photosystems I and II are required. Oxygenic photosynthesis can be performed by plants and cyanobacteria. Photosynthetic bacteria that cannot produce oxygen have a single photosystem called BRC (bacterial reaction center).
So, the correct answer is 'Both A and B'
Question 6
1 / -0

The symbiotic association between an alga and a fungus is called ________.

A
Moss

B
Lichens

C
Root nodules

D
Rhizopus

Solution

Algae and fungi form a symbiotic association called lichens. In this relationship, algae produce food and fungi provide protection and anchoring. Therefore, option B is correct.
Question 7
1 / -0

In which group of fungi, the zoospores possess two oppositely directed flagella, one whiplash and another tinsel type?

A
Ascomycetes

B
Zygomycetes

C
Oomycetes

D
Deuteromycetes

Solution

In fungi, the flagella may be anterior, posterior or laterally attached to a groove in the body. There are two types of flagella in zoospores. They are whiplash and tinsel types. The whiplash flagellum has a long rigid base composed of all the eleven fibrils and a short flexible end formed of the two central fibrils only. The tinsel flagellum has a rachis, which is covered on all sides along its centre length with short fibrils. In uniflagellate zoospores, the flagellum may be anterior or posterior. But in biflagellate zoospores, one is whiplash and the other is tinsel type and one points forward and the other backward. In oomycetes, the motile cells with two oppositely directed flagella present. The anterior is of tinsel type and the posterior is of whiplash.
Thus, the correct answer is option C.
Question 8
1 / -0

In lichens, medulla has

A
Endodermis

B
Hadrome

C
Hypodermis

D
Piliferous layer

Solution

Mosses are flowerless plants that grows as dense green tufts or mats in damp and shady locations. Lichens on the other hand though, they appear similar to mosses, are not related to these are are a composite organism of algae, cyanobacteria and living in a symbiotic relationship in a fungus. The medulla which is found below the cortex in lichens is made up of loosely woven layer of fungal filaments. Hadrome refers to collection of hydroids or vascular tissue that occur in some bryophytes or mosses and help in transporting water and minerals drawn from the soil.
Therefore, the correct answer is option B.
Question 9
1 / -0

The asexual spores of fungi produced at terminal ends or at intercalary places during extremely unfavourable conditions are

A
Zoospores

B
Chlamydospores

C
Conidia

D
Oidia

Solution

In some fungi like smuts, the vegetative cells are converted into a small thick walled rounded spores known as chlamydospores. These may be terminal or intercalary in position. They remain viable for several years. On the approach of favourable conditions, they germinate to give rise the same type of mycelium. Chlamydospores are usually dark-coloured, spherical and have a smooth (non-ornamented) surface. They are multicellular, the cells being connected by pores in septae between cells. Thus, the correct answer is option B.
Question 10
1 / -0

Pick the correct match for structure of bacteria.

A
A- Flagellum, B- Ribosome, C - Plasma membrane, D- Pili, E- Nucleoid region, F- Capsule, G- Cytoplasm, H- Plasmid

B
A- Flagellum, B- Ribosome, C- Mitochondria, D- Plasma membrane, E- Pili, F- Capsule, G- Golgi, H- Plasmid

C
A- Flagellum B- ER, C- Ribosome, D- Plasma membrane, E- Pili, F- Capsule, G- Golgi, H- Plasmid

D
A- Flagellum, B- Ribosome, C- Cytoplasm, D- Pili, E- DNA, F- Capsule, G- Plasma membrane, H- Plasmid

Solution

Label A refers to flagella which are the elongated filament-like structure used for the purpose of locomotion.
Label B refers to the ribosome which is involved in protein synthesis.
Label C refers to cytoplasm which is the fluid matrix material inside the cell.
Label D refers to pili which are involved in the process of conjugational gene transfer.
Label E refers to chromosomal DNA which is the genetic material of the bacterium.
Label F refers to the capsule which is the protective covering of the cell made up of polysaccharides.
Label G refers to a plasma membrane which is a semi-permeable membrane made up of lipids and proteins.
Label H refers to the plasmid which is the extrachromosomal DNA responsible for antibiotic and disease resistance.
Thus, the correct answer is option D.

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Biological Classification Test - 90

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Biological Classification Test - 90

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SHARING IS CARING

Question 1

Sugar

Pesticide

Antibiotic

All of the above

Solution

Question 2

Lichens

Xylem

Phloem

Predation

Solution

Question 3

It has diverse mode of form, structure and nutrition.

Of organisms like slime mould, which are totally different from all other organisms.

Its members are from different evolutionary lines.

All of the above.

Solution

Question 4

Heterospory

Dichogamy

Herkogamy

Diplanetism

Solution

Question 5

Photo system I

Photo system II

Both A and B

None of these

Solution

Question 6

Moss

Lichens

Root nodules

Rhizopus

Solution

Question 7

Ascomycetes

Zygomycetes

Oomycetes

Deuteromycetes

Solution

Question 8

Endodermis

Hadrome

Hypodermis

Piliferous layer

Solution

Question 9

Zoospores

Chlamydospores

Conidia

Oidia

Solution

Question 10

A- Flagellum, B- Ribosome, C - Plasma membrane, D- Pili, E- Nucleoid region, F- Capsule, G- Cytoplasm, H- Plasmid

A- Flagellum, B- Ribosome, C- Mitochondria, D- Plasma membrane, E- Pili, F- Capsule, G- Golgi, H- Plasmid

A- Flagellum B- ER, C- Ribosome, D- Plasma membrane, E- Pili, F- Capsule, G- Golgi, H- Plasmid

A- Flagellum, B- Ribosome, C- Cytoplasm, D- Pili, E- DNA, F- Capsule, G- Plasma membrane, H- Plasmid

Solution

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