What is not true for red algae?

1. Lack centriole and flagella

2. Accessory pigments include phycocyanin, phycoeythrin and allophycocyanin

3. They reproduce using alternation of generation

4. The stored food is floridean starch very similar to cellulose

Subtopic:  Rhodophyceae: Red Algae and Importance of Algae |
 54%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Identify the incorrect statement regarding green algae?

1. They contain chl a, chl b as well as carotenoids.

2. The chloroplasts may be discoid, plate-like, reticulate, cup-shaped, spiral or ribbon-shaped in different species.

3. Most members have one or more storage bodies called pyrenoids located outside the chloroplasts.

4. They usually have a rigid cell wall made of an inner layer of cellulose and an outer layer of pectose.

Subtopic:  Chlorophyceae: Green Algae: I | Chlorophyceae: Green Algae |
 66%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Consider the following statements regarding brown algae:

I. The pigments are chl a, c and xanthophylls, fucoxanthin
II. Storage food is laminarin and mannitol
III. The cellulosic cell wall is covered with algin
IV. They have a centrally located vacuole
V. Their photosynthetic organs are called as fronds - leaf like structures
VI. They have pear shaped biflagellate zoospores
VII. They have two unequal laterally attached flagella.

The number of correct statements is

1. 5

2. 6

3. 7

4. 4

Subtopic:  Pheophyceae: Brown Algae |
 61%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Consider the following adaptations seen in plants:

I. Lack of cuticle

II. Presence of stomata for exchange of gases

III. Evolution of leaf

IV. Dominance of sporophyte

V. Structural support of vascular tissue

Which of the above adaptations would be required in a plant if it has to be successfully adapted to life on land?

1. All but I

2. All but I and III

3. I, II, III and IV

4. All

Subtopic:  Classification System: I | Classification System: II | Classification System |
 52%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Identify the incorrect statement regarding mosses:

1. Leaves are one cell thick except at the midrib and lack stomata
2. The first gametophyte stage is protonema that is creeping and green
3. The second stage is the leafy stage, which develops from the secondary protonema as a lateral bud.
4. Rhizoids are elongated and unicellular
Subtopic:  Bryophytes | Bryophytes (Anthoceropsida) |
 66%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Consider the following statements regarding bryophytes:

I. Bryophytes are also called amphibians of the plant kingdom because they are dependent on water for sexual reproduction.

II. They play an important role in plant succession on bare rocks.

III. They lack true roots, stem or leaves.

IV. The sex organs in bryophytes are multicelluar.

V. They produce biflagellate zoospres.

VI. Archegonium is flask-shaped and produces a single egg.

The number of corrected statements is

1. 3

2. 4

3. 5

4. 6

Subtopic:  Bryophytes |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following statements regarding gymnosperms are correct?

I. Ovules are naked - not enclosed by any ovary wall before fertilisation but seeds that develop after fertilisation are covered.

II. In all living Gymnosperms, sporophyte is dominant over the gametophyte.

III. They are heterosporous.

IV. The male and female gametophytes do not have an independent existence.

1. I, II and III

2. I, III and IV

3. II, III and IV

4. I, II, III and IV

Subtopic:  General Accounts of Gymnosperms: II | Gymnosperms |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following algae is likely to be found in the deepest waters?

(1) Green

(2) Brown

(3) Red

(4) All are found at equal depths

Subtopic:  Rhodophyceae: Red Algae and Importance of Algae |
 85%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which pair[s] is/are in incorrectly matched?

I. Phaeophyceae - Algin in cell wall

II. Chlorophyceae - Laminarin is stored food

III. Rhodophyceae - 2, unequal, lateral flagella

(1) Only II

(2) Only III

(3) I and II only

(4) II and III only

Subtopic:  Chlorophyceae: Green Algae: I | Pheophyceae: Brown Algae | Rhodophyceae: Red Algae and Importance of Algae | Chlorophyceae: Green Algae |
 75%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The gemmae produced by some liverworts function as:

1. A water gathering structure

2. A light capturing structure

3. A sexual structure

4. An asexual structure

Subtopic:  Bryophytes (Liverworts) |
 77%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh