Diversity in Living Organisms Test

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Diversity in Living Organisms Test - 70

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Weekly Quiz Competition

Question 1
1 / -0

A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has?

A
Haploid vegetative cells and haploid gametangia

B
Diploid vegetative cells and diploid gametangia

C
Diploid vegetative cells and haploid gametangia

D
None of these

Solution

A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has haploid vegetative cells and haploid gametangia. This type of life cycle is called the haplontic life cycle.

So, the correct answer is 'Haploid vegetative cells and haploid gametangia'.
Question 2
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Deposition of calcareous shell around zygote occurs in

A
Birds and reptiles

B
Birds and mammals

C
Mammals and reptiles

D
All of the above

Solution

In oviparous animals such as reptiles and birds, fertilised eggs are covered by hard calcareous shell and are laid in a safe place. After incubation period, young ones hatch out. In viviparous animals such as majority of mammals including human beings, the zygote develops into a young one inside the body of the female individual. After a certain growth, young ones are delivered by the female individual. Due to proper care and protection, the chances of survival of young ones are more in viviparous individuals.
Question 3
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Which is the largest living bird?

A
Emperor Penguin

B
Ostrich

C
Brown Kiwi

D
Greater Rhea
Solution
- The common ostrich or simply ostrich, is a species of large flightless bird native to Africa.
- It is distinctive in its appearance, with a long neck and legs, and can run for a long time at a speed of 55 km/h (34 mph) or even up to about 70 km/h (43 mph), the fastest land speed of any bird.
- The common ostrich is the largest living species of bird and lays the largest eggs of any living bird.
- It lives in nomadic groups of 5 to 50 birds.
- So, the correct answer is option B- 'Ostrich'.
Question 4
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Which of the following features is characteristic of birds but not reptiles?

A
Hollow bones

B
Tail

C
Eyes

D
Lay eggs

Solution

With hollow bones, a bird can fly very long distances without getting worn out from carrying its own weight. Hollow bones look like other bones, with the usual hard exterior like a human bone has. But instead of being filled with marrow (as in humans), a hollow bone has an air cavity inside.
So, the correct option is A.
Question 5
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The scientific name of fruit fly is

A
Drosophila melanogaster

B
Musca domestica

C
Homo sapiens

D
Ropalidia marginata

Solution

Drosophila melanogaster is a species of fly (the taxonomic order Diptera) in the family Drosophilidae. The species is known generally as the common fruit fly (though inaccurately) or vinegar fly. melanogaster is a common pest in homes, restaurants, and other places where food is served. So, the correct option is "A" (Drosophila melanogaster).
Question 6
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Which one of the following statements is correct?

A
Mostly, bacteria are heterotrophic, but some are autotrophic.

B
All bacteria are heterotrophic.

C
All bacteria are autotrophic.

D
All bacteria are photosynthetic.

Solution

We cannot say that 'all bacteria are heterotrophs' or 'all bacteria are autotrophs'. Most of them are heterotrophic, but some are autotrophic like Cyanobacteria.
So, the correct option is A.
Question 7
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Mammals are divided into several orders. Which order includes the most advanced mammals?

A
Primates

B
Sirenia

C
Pholidota

D
Cetacea

Solution

A primate is a mammalian animal constituting the taxonomic order Primates. They are the most advanced mammals. Primates arose 55-85 million years ago from terrestrial ancestors (Primatomorpha), who adapted to living in the trees of tropical forests: many primate characteristics represent adaptations to life in this challenging environment, including large brains, visual acuity, color vision, altered shoulder girdle, and dexterous hands. Primates range in size from Madame Berthe's mouse lemur, which weighs 30 g (1 oz), to the eastern gorilla, weighing over 200 kg (440 lb). There are 190 - 448 species of living primates, depending on which classification is utilized. New primate species continue to be discovered: over 25 species were described in the first decade of the 2000's, and eleven since 2010.
So the correct option is 'primates'.
Question 8
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Which insects cultivate fungus in their colonies and allow only the queen, king, and young ones to eat it?

A
Butterflies

B
Termites

C
Bees

D
Beetles

Solution

That is they grow only fungus in their garden, which is not easily done. These insects are exclusively mycophagous, i.e., they eat fungi. In a young colony, the queen and the first workers to hatch from eggs . Termites have bacteria in their gut that allow them to digest cellulose and thereby recycling plant material. So. the correct option is "B" (Termites".
Question 9
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The commercially exploited algae include

A
Caulerpa, Chara, Volvox

B
Gelidium, Laminaria and Porphyra

C
Acetabularia, Spirogyra and Ulothrix

D
All of the above

Solution

Option B is correct because Porphyra, Laminaria are among the 70 species of marine algae that are used as food and Gelidium is a commercially important source of Agar and most recently these species are also used in cosmetics, skin care and sunscreen ingredients.
Question 10
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Patches of mesodermal cells are present in

A
Platyhelminthes

B
Aschelminthes

C
Porifera

D
Cnidaria

Solution

Patches of mesodermal cells are present in Phylum Aschelminthes. Aschelminthes contains coelom or true cavity. True coelom is the fluid filled body cavity. The space between body wall and alimentary canal is filled by patches of mesodermal cells.
Thus, the correct answer is 'Aschelminthes.'

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Re-Attempt Weekly Quiz Competition

Diversity in Living Organisms Test - 70

Result

Diversity in Living Organisms Test - 70

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SHARING IS CARING

Question 1

Haploid vegetative cells and haploid gametangia

Diploid vegetative cells and diploid gametangia

Diploid vegetative cells and haploid gametangia

None of these

Solution

Question 2

Birds and reptiles

Birds and mammals

Mammals and reptiles

All of the above

Solution

Question 3

Emperor Penguin

Ostrich

Brown Kiwi

Greater Rhea

Solution

Question 4

Hollow bones

Tail

Eyes

Lay eggs

Solution

Question 5

Drosophila melanogaster

Musca domestica

Homo sapiens

Ropalidia marginata

Solution

Question 6

Mostly, bacteria are heterotrophic, but some are autotrophic.

All bacteria are heterotrophic.

All bacteria are autotrophic.

All bacteria are photosynthetic.

Solution

Question 7

Primates

Sirenia

Pholidota

Cetacea

Solution

Question 8

Butterflies

Termites

Bees

Beetles

Solution

Question 9

Caulerpa, Chara, Volvox

Gelidium, Laminaria and Porphyra

Acetabularia, Spirogyra and Ulothrix

All of the above

Solution

Question 10

Platyhelminthes

Aschelminthes

Porifera

Cnidaria

Solution

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