Diversity in Living Organisms Test

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Diversity in Living Organisms Test - 72

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Weekly Quiz Competition

Question 1
1 / -0

Organisms that are considered to be the most primitive organisms in the world are grouped under:

A
Kingdom Monera

B
Kingdom Protista

C
Kingdom Fungi

D
Kingdom Plantae

Solution

Kingdom Monera contains unicellular, prokaryotic organisms like bacteria. These are the most primitive organisms with no defined nucleus and no membrane-bound organelles.
Hence, the correct option is A.
Question 2
1 / -0

How do poriferan animal differ from coelenterate animals?

A
They have gastrovascular cavity.

B
They have nematocyst.

C
They have incomplete digestive system.

D
Both A and B
Solution
Poriferans do not have a gastrovascular system because they have a simple cellular level of organization where individual cells do not form tissues. While in coelenterates tissue-level organization is found so they can form a gastrovascular cavity.
The nematocyst is a specialized cell in the tentacles of coelenterates that helps in defence. While there is no specialized cell found in Porifera.
Poriferans and coelenterates both show incomplete digestive systems.
So, the correct answer is 'Both A and B'.
Question 3
1 / -0

Find the odd one out.

A
Ant

B
Cockroach

C

Spider

D
Dragonfly
Solution
Correct Option: C
Explanation:
Ants, cockroaches and dragonflies are insects.
However, a spider is an arachnid.
Arachnids have eight legs unlike ,other insects.
Hence, option C, the spider is the odd one out.
Question 4
1 / -0

A group that includes man and whale but not a lizard is

A
Aves

B
Reptilia

C
Mammals

D
None of the above

Solution

Females of all mammal species nurse their young with milk, secreted from the mammary glands. Mammals include both man and whale because females nurse their young with milk, secreted from the mammary glands.
So, the correct answer is 'Mammals'.
Question 5
1 / -0

Planaria belongs to the phylum:

A
Nemathelminthes

B
Platyhelminthes

C
Arthropoda

D
Mollusca
Solution
Platyhelminthes (from Greek: Platy, means 'flat' and Helminth means 'worm') are a phylum of relatively bilateral, unsegmented, soft-bodied invertebrates.
Planarians are of a group of widely distributed, mostly free-living flatworms of the class Turbellaria and phylum Platyhelminthes.
Planaria belong to the phylum Platyhelminthes because they are flat in shape and have bilateral symmetry.
So, the correct answer is 'Platyhelminthes'.
Question 6
1 / -0

Earthworm belongs to the phylum:

A
Mollusca

B
Porifera

C
Annelida

D
Arthropoda
Solution
An earthworm is a terrestrial invertebrate that belongs to the phylum Annelida.
The annelids are also known as ringed worms or segmented worms.
Characteristics of Phylum Annelida
They have a long and segmented body.
They are bilaterally symmetrical.
They are triploblastic.
Also, they exhibit organ system grade of organisation, showing organ differentiation.
So, the correct answer is 'Annelida'.
Question 7
1 / -0

Butterfly belong to which of the following phylum?

A
Arthropoda

B
Annelida

C
Platyhelminthes

D
None of the above

Solution

Butterflies belong to the phylum 'Arthropoda', to which insects belong. Butterflies and moth belong to the order Lepidoptera. Lepidos is Greek for "scales" and ptera means "wing". These scaled wings are different from the wings of any other insects. So, the correct option is 'Arthropoda'.
Question 8
1 / -0

Which of the following is present at the anterior end of Balanoglossus?

A
Proboscis

B
Collar

C
Hepatic region

D
Brachiocephalic region

Solution

In longitudinal section of the anterior region of Balanoglossus, three parts are visible i.e., proboscis, collar, and trunk. Among these, the proboscis is present in the anterior end. It is almost round in shape. Proboscis helps in burrowing through the sand.
So, the correct answer is 'Proboscis'.
Question 9
1 / -0

In cockroach spermatheca is present in

A
6th abdominal segment of male

B
7th abdominal segment of male

C
6th abdominal segment of female

D
7th abdominal segment of female

Solution

Cockroaches are dioecious and both sexes have well developed reproductive organs. The female reproductive system consists of two large ovaries, lying laterally in the 2nd – 6th abdominal segments. Each ovary is formed of a group of eight ovarian tubules or ovarioles, containing a chain of developing ova. Oviducts of each ovary unite into a single median oviduct (also called vagina) which opens into the genital chamber. A pair of spermatheca is present in the 6th segment which opens into the genital chamber.
So, the correct answer is '6th abdominal segment of female'.
Question 10
1 / -0

Choose the incorrect statement.

A
In birds and mammals internal fertilization takes place.

B
Colostrum contains antibodies and nutrients.

C
Polyspermy is prevented by the chemical changes on the egg surface.

D
In the human female implantation occurs almost seven to ten days after fertilization.
Solution
Correct Option: C
Explanation:
Internal fertilization is a type of fertilization in which there is union of an egg and sperm inside the body of a parent.
Examples include reptiles, mammals, birds.
Colostrum is the first form of milk that is produced by the mammary glands of mammals.
It contains large numbers of IgA antibodies and lymphocytes that help protect the mucous membranes of the infant.
Polyspermy is a condition in which egg has been fertilized by more than one sperm.
It is prevented by depolarization of the egg plasma membrane after the entry of the first sperm.
This depolarization prevents the entry of additional sperms.
The fertilized ovum enters the uterine cavity 3-4 days later.
Implantation occurs almost 7 to 10 days after fertilization and 5 to 6 days after it has entered the uterine cavity.

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Diversity in Living Organisms Test - 72

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Diversity in Living Organisms Test - 72

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SHARING IS CARING

Question 1

Kingdom Monera

Kingdom Protista

Kingdom Fungi

Kingdom Plantae

Solution

Question 2

They have gastrovascular cavity.

They have nematocyst.

They have incomplete digestive system.

Both A and B

Solution

Question 3

Ant

Cockroach

Spider

Dragonfly

Solution

Question 4

Aves

Reptilia

Mammals

None of the above

Solution

Question 5

Nemathelminthes

Platyhelminthes

Arthropoda

Mollusca

Solution

Question 6

Mollusca

Porifera

Annelida

Arthropoda

Solution

Question 7

Arthropoda

Annelida

Platyhelminthes

None of the above

Solution

Question 8

Proboscis

Collar

Hepatic region

Brachiocephalic region

Solution

Question 9

6th abdominal segment of male

7th abdominal segment of male

6th abdominal segment of female

7th abdominal segment of female

Solution

Question 10

In birds and mammals internal fertilization takes place.

Colostrum contains antibodies and nutrients.

Polyspermy is prevented by the chemical changes on the egg surface.

In the human female implantation occurs almost seven to ten days after fertilization.

Solution

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