Given below are two statements:One is labelled as Assertion A and… - Vidyadip

MCQ

Given below are two statements:One is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: The first stage of gametophyte in the life cycle of moss is protonema stage.
Reason R: Protonema develops indirectly from spores produced in capsule.
Choose the most appropriate answer from the options given below:

A
A is not correct but R is correct
B
Both A and R are correct and R is the correct explanation of A
C
Both A and R are correct but R is NOT the correct explanation of A.
✓
A is correct but R is not correct.

✓

Answer

Correct option: D.

A is correct but R is not correct.

(D)
Mosses spores released from the capsule germinate to form the filamentous structure called protonema. It is the first stage of gametophyte.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "SECTION - A [BOTANY - MCQ]" from Model Paper 6→Model Paper 6 — all question types→NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Continuous self pollination in a species develops

In which of the following places messenger $RNA$ is formed in a living cell

Which of the following will determines the shape of the cells and provides a strong structural support to prevent the bacterium from bursting or collapsing?

Which one of the following statements are correct ?
(i) Dicot root always have 2-4 xylem and phloem patches.
(ii) All tissues on the inner side of the endodermis such as pericycle, vascular bundles and pith constitute the stele.
(iii) There are usually less than six xylem bundles in the monocot root.
(iv) The outer hypodermis consists of few layers of collenchymatous cells just below the epidermis, which provide mechanical strength to the young stem.
(v) The cells of the hypodermis are rich in starch grains and the layer is also referred to as the starch sheath.
(vi) A large number of vascular bundles are arranged in a ring; the 'ring' arrangement of vascular bundles is a characteristic of dicot stem.
(vii) The monocot stem has a sclerenchymatous hypodermis and a large number of scattered vascular bundles.
(viii) The adaxial epidermis generally bears more stomata than the abaxial epidermis.
(ix) The sizes of the vascular bundles are dependent on the size of the veins.
(x) In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, coloured cells. These are called buliform cells.
(xi) The tissues involved in secondary growth are the two lateral meristems: vascular cambium and cork cambium.
(xii) In dicot stems, the cells of cambium present between primary xylem and primary phloem is the intrafascicular cambium.
(xiii) The cells of medullary rays adjoining interfascicular cambium become meristematic and form the intrafascicular cambium.
Choose the correct option given below :-

Assertion: Tomatoes and bell pepper are allowed to grow in carbon dioxide enriched atmosphere that leads to higher yields.
Reason: The fact that C₃ plants respond to higher CO₂ concentration by showing increased rates of photosynthesis leading to higher productivity.

In angiosperms, functional megaspore develops into

Choose correct option w.r.t. spongy mesophyll in dicot leaf.

Study the following statements

$I.$ $O_{2}$ helps in releasing metabolic energy, which is essential for growth

$II.$ Nutrients are required by plants for the synthesis of protoplasm

$III.$ Change in temperature could be the detrimental for the survival of an organism

$IV$. Light and gravity don't affect the stages of growth

Choose the correct option

Which of the following are not polymeric?

Granal chloroplasts are found in