Biology Test 293

Result

Biology Test 293

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

Assertion (A): Viruses are considered obligate parasites.

Reason (R): They can replicate only inside the living cells of other organisms.

A
Both A and R are true, and R is the correct explanation of A.

B
Both A and R are true, but R is not the correct explanation of A.

C
A is true, but R is false.

D
A is false, but R is true.

Solution

Viruses lack the cellular machinery necessary for their replication and must hijack the cellular machinery of a living host to multiply, which makes them obligate parasites. This dependency on a host cell for replication is what makes the reason a correct explanation of the assertion.
Question 2
4 / -1

Mark the wrongly matched-

A
Palmately compound leaf - Silk cotton

B
Opposite phyllotaxy - Guava

C
Alternate phyllotaxy - china rose

D
large and long lived leaf – Australian Accacia

Solution

In Australian Accacia plant, leaves are small and long lived.
Question 3
4 / -1

Assertion (A): Mycorrhizal fungi enhance plant nutrient absorption.

Reason (R): They convert atmospheric nitrogen into a form that plants can absorb.

A
Both A and R are true, and R is the correct explanation of A.

B
Both A and R are true, but R is not the correct explanation of A.

C
A is true, but R is false.

D
A is false, but R is true.

Solution

Mycorrhizal fungi indeed enhance plant nutrient absorption, particularly phosphorus and other minerals, by extending the root surface area. However, they do not convert atmospheric nitrogen. Nitrogen fixation is associated with certain bacteria, not mycorrhizal fungi, making the reason false in this context.
Question 4
4 / -1

Which is correct statement-

A
In maize seed coat is membranous

B
Embryo consist of embryonal axis , two cotyledon and seed coat

C
monocots are generally non-endospermous

D
Seed ocat have outer tegmen inner testa

Solution

Explanation:

Seed Coat in Maize:
- The correct statement is A: In maize, the seed coat is membranous.
- The seed coat in maize refers to the protective outer covering of the seed.
- In maize seeds, the seed coat is membranous, providing protection to the embryo and endosperm inside.

Therefore, the correct statement is that in maize, the seed coat is membranous.
Question 5
4 / -1

What is the primary function of the root system in plants?

A
To produce flowers and fruits

B
Absorption of water and minerals from the soil

C
To conduct photosynthesis

D
To provide support to other plants

Solution

The primary function of the root system in plants is the absorption of water and minerals from the soil. Roots anchor the plant in the soil and absorb essential nutrients and water, which are then transported to different parts of the plant for growth and development. This is crucial for the plant's survival and overall health.
Question 6
4 / -1

Few Examples are given-

Pea, bean, belladonna, Aloe, Asparagus, mustard, indigofera, Gloriosa, groundnut and makoi

How many have zygomophic flower

A
four

B
five

C
six

D
seven

Solution

Examples of fabaceae are zygomorphic
Question 7
4 / -1

Which type of root system is characterized by a large number of roots originating from the base of the stem?

A
Tap root system

B
Fibrous root system

C
Adventitious root system

D
Radicle root system

Solution

The fibrous root system is characterized by a large number of roots that originate from the base of the stem. This type of root system is common in monocotyledonous plants, such as grasses, where the primary root is short-lived and replaced by many secondary roots, providing a dense network of roots.
Question 8
4 / -1

Few features are given-

Endospermous, Actinomorphic, basal leaf, epipetalous, bicarpellary, superior ovary, reticulate venation and glabrous

How many belong to liliaceae-

A
four

B
five

C
three

D
six

Solution

Epipetalous, bicarpellary, reticulate venation and glabrous are feature of solanaceae
Question 9
4 / -1

What is the term used for the thimble-like structure that covers the apex of the root?

A
Root hair

B
Root cap

C
Meristematic region

D
Zone of elongation

Solution

The root cap, or calyptra, is the thimble-like structure that covers the apex of the root. It protects the tender apex of the root as it makes its way through the soil, ensuring the root tip is not damaged as it grows.
Question 10
4 / -1

Among given feature-

Axile placentation, apocarpous, diadelphous, twisted aestivation, monodelphous, alternate phyllotaxy

How many belong to china rose-

A
three

B
four

C
five

D
six

Solution

China rose given separately in example of axile placentation, monodelphous, alternate phyllotaxy and twisted aestivation

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Biology Test 293

Result

Biology Test 293

Score

-

Rank

-

SHARING IS CARING

Question 1

Both A and R are true, and R is the correct explanation of A.

Both A and R are true, but R is not the correct explanation of A.

A is true, but R is false.

A is false, but R is true.

Solution

Question 2

Palmately compound leaf - Silk cotton

Opposite phyllotaxy - Guava

Alternate phyllotaxy - china rose

large and long lived leaf – Australian Accacia

Solution

Question 3

Both A and R are true, and R is the correct explanation of A.

Both A and R are true, but R is not the correct explanation of A.

A is true, but R is false.

A is false, but R is true.

Solution

Question 4

In maize seed coat is membranous

Embryo consist of embryonal axis , two cotyledon and seed coat

monocots are generally non-endospermous

Seed ocat have outer tegmen inner testa

Solution

Question 5

To produce flowers and fruits

Absorption of water and minerals from the soil

To conduct photosynthesis

To provide support to other plants

Solution

Question 6

four

five

six

seven

Solution

Question 7

Tap root system

Fibrous root system

Adventitious root system

Radicle root system

Solution

Question 8

four

five

three

six

Solution

Question 9

Root hair

Root cap

Meristematic region

Zone of elongation

Solution

Question 10

three

four

five

six

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.