Tag: pictorial feature of plant kingdom

Questions Related to pictorial feature of plant kingdom

First true land plants are

botany pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Mosses

  2. Ferns

  3. Amphibians of plant kingdom

  4. Produce flowers

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Correct Option: A
Explanation:

The first true land plants were non-vascular plants such as mosses and liverworts that appeared in the early Ordovician period. 

So, the correct answer is 'Mosses'

Mosses are gregarious in nature, because?

botany pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. They show independent alternation of generation

  2. They appear in group

  3. They show haplo-diplontic life cycle

  4. Their antherozoids are biflagellate

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Correct Option: A

The sporophyte in mosses is?

botany pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Less elaborate than that in liverworts

  2. More elaborates than that in liverworts

  3. Equally elaborate in both

  4. Independent of gametophyte

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Correct Option: A

Elaters are present in the sporogonium of

botany pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Riccia

  2. Selaginella

  3. Marchantia

  4. Both A and B

Show answer
Correct Option: C
Explanation:

Elaters are present in hepaticopsida (marchantia). Pseudoelators are present in Anthocerotopsida. Single layered capsule wall splits into a number of longitudinal valves, which extend from apex towards the middle of capsule. The valves are rolled back due to annular thickenings in jacket cells. Jerky movement of elaters due to their hygroscopic nature leads to loosening up of spore mass and scattering of spores in air.

Which one of them lack foot and seta in sporophyte?

botany pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Marchantia

  2. Riccia

  3. Anthoceros

  4. Moss

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Correct Option: B

Which group of plantae includes atracheophytic embryophytes?

botany pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Thallophyta

  2. Bryophyta

  3. Pteridophyta

  4. More than one option is correct

Show answer
Correct Option: B
Explanation:

In the plant kingdom atracheophytic embryophytes are bryophytes. Thye do not contain vascular tissues and produce embryo in their life cycle.

So, the correct option is 'Bryophyta'.

Non-vascular embryophyte with leaves is

botany pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Riccia

  2. Porella

  3. Selaginella

  4. Macrocystis

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Correct Option: A

The tallest moss in the world is

botany pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Funaria

  2. Pogonatum

  3. Buxbaumia

  4. Dawsonia

Show answer
Correct Option: D
Explanation:

Dawsonia is a classification of mosses. This genus is a member of the Polytrichaceae family. Dawsonia plants are commonly known to grow taller and have thicker leaves than other common mosses.

Sporogenous cells are endothelial in origin. The class they belong is

botany pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Anthocerotopsida

  2. Hepaticopsida

  3. Bryopsida

  4. None of the above

Show answer
Correct Option: B
Explanation:

Sporogenous cells are those cells, which are capable of undergoing meiotic divisions. These cells combine with each other to form a sporogenous tissue.
Sporogenous cells are endothelial in origin in class Hepaticopsida. In this class the sporogenous cells arise from the endothelium.

The antherozoids of Marchantia are

botany pictorial feature of plant kingdom classification of bryophytes types of bryophytes bryophyta

  1. Long, straight and biflagellate

  2. Long, straight and multiflagellate

  3. Long, curved and biflagellate

  4. Short, curved and biflagellate

Show answer
Correct Option: C
Explanation:

An antheridium or antherida is a haploid structure or organ producing and containing male gametes (called antherozoids or sperm). In general, the male gametes (antherozoids) are produced in globose structures (antheridia), that are either stalked or sunken in the gametophyte. The antherozoids of Marchantia are long, curved and biflagellate.