Tag: pictorial feature of plant kingdom

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Questions Related to pictorial feature of plant kingdom

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Vessels and companion cells occur in

  1. Angiosperm

  2. Gymnosperms

  3. Pteridophytes

  4. Viruses
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vessels and companion cells are defining characteristics of the xylem and phloem, respectively, in angiosperms. Gymnosperms typically lack vessels (using tracheids instead) and companion cells (using albuminous cells).

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Angiosperms have dominated the land primarily by their ________________.

  1. Power of adaptability to diverse habitat

  2. Nature of pollination

  3. Domestication by humans

  4. Large number of seeds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Angiosperms dominate the land primarily because of their high adaptability to diverse habitats and efficient reproductive mechanisms. Their ability to colonize various environments is their key evolutionary advantage.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

What is true of angiosperms ?

  1. Seeds are naked

  2. They have tracheids only

  3. They are not cryptogams

  4. They lack companion cells.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Angiosperms are phanerogams (seed-bearing plants), not cryptogams (non-seed-bearing plants). They have enclosed seeds, possess both tracheids and vessels, and have companion cells.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Greatest extent of adaptation to various environments is found in __________.

  1. Gymnosperms

  2. Bryophytes

  3. Ferns

  4. Angiosperms.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Greatest extent of adaptation to various environments is found in angiosperms. Angiosperms grow on most of the places on earth. They grow in hot (Cactus) and cold deserts. They also grow in high altitude of Himalayas, in water (Hydrilla)  and all types of terrestrial habitat.

So, the correct answer is 'Angiosperms.'
Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Phloem of angiosperms differs from that of other vascular plants in presence of ______________.

  1. Vessels

  2. Companion cells

  3. Tylosoldes

  4. Albuminous cells
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Companion cells are specialized parenchyma cells associated with sieve tube elements in the phloem of angiosperms. Gymnosperms use albuminous cells instead.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Floral features are chiefly used in angiosperms identification because

  1. Flowers are nice to work with

  2. Flowers have various colour

  3. Flowers can be safely pressed

  4. Reproductive parts are more stable and conservative than vegetative parts
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Floral parts are considered more evolutionarily stable and less influenced by environmental changes compared to vegetative parts (leaves, stems, roots), making them more reliable for taxonomic classification.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

A group of PUC students are appearing for a biology practical examination. One of the practical problems is to identify the slide focused under a microscope. When they observe, they see a structure more or less spherical having an outer most layer which is green in colour and in the middle many of parenchyma cells and a number of skull-shaped bundles are arranged irregularly all around. Help them in identifying the structure properly.

  1. It is the transverse section of a dicot stem.

  2. It is the transverse section of a monocot root.

  3. It is the transverse section of a dicot leaf.

  4. Both B and C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Monocots have their vascular bundles arranged in the form of a ring. They have spherical structures when seen in a microscope.  In their outermost layer, there is a presence of chloroplast containing chlorophyll. Both of them have these layers of epidermis, cortex, endodermis, pericycle, vascular tissue, conjunctive tissue, pith. In the middle layer, there are parenchyma cells. Below it, there are skull-shaped bundles of xylem and phloem arranges spherically.

So, option D is the correct answer.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Ploidy of ovum of angiosperms is

  1. Haploid

  2. Diploid

  3. Triploid

  4. Polyploid
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In Angiosperms, the female gametophyte, or megagametophyte, is the embryo sac. Eggs develop in the ovules of the angiosperm flower. Within each ovule is a megaspore mother cell. Each megaspore mother cell undergoes meiosis to produce four haploid megaspores.