Tag: pictorial feature of plant kingdom

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Questions Related to pictorial feature of plant kingdom

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Gymnosperms are naked seeded plants because

  1. There is no fruit

  2. There is no ovule

  3. There is no fertilization

  4. There is no ovary and fruit.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gymnosperms are called 'naked-seeded' because their ovules are not enclosed within an ovary wall, and therefore they do not form fruits after fertilization.

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Pollen chamber present in gymnosperms represents _________________.

  1. Microsporangium

  2. Pollen grain cell where sperms are formed

  3. Opening of megagametophyte for passage of pollen tube to egg

  4. Cavity in nucellus for resting pollen grains after pollination.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In gymnosperms, the pollen chamber is a cavity formed in the nucellus of the ovule where pollen grains land and rest before germination.

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Siphonogamy is a reproductive process in plants that produce seeds. In this process, a pollen tube carries the sperm cells to the egg located within the integumented megasporangium. Which group of plants exhibit this process?

  1. Pteridophytes

  2. Bryophytes

  3. Thallophytes

  4. Gymnosperms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gymnosperms are wind-pollinated plants. They do not have to cover around seeds. They do not produce fruits or flowers. After pollination, they produce pollen tubes. This pollen tube carries the sperm cells to the egg. These eggs are located within the integument megasporangium. So, all these are the characteristics of gymnosperms.

So, option G "Gymnosperms" is the correct answer.

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Plants of this group are diploid and were adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is

  1. Monocot

  2. Dicots

  3. Pteridophyta

  4. Gymnosperm
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Gymnosperms are woody, ever green trees. They are found where snow is the source of water and not rains. Their dominant plant body is sporophyte. It is differentiated into roots, stems and leaves. They are xerophytic due to presence of thick bark, scales, cuticles, sunken stomata etc.

So, option D "Gymnopserms" is the correct asnwer.

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

In which portion of Cycas diploxylic vascular bundles are found ?

  1. Root

  2. Stem

  3. Leaflet

  4. Rachis and leaflet
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The rachis and leaflet have diploxylic vascular bundles. At the region ofthe stem cortex, the leaf trace has only centrifugal xylem, hence, it is endarch. These traces enter the leaf as the rachis separates, the centripetal xylem appears and it is in the exarch condition. The leaflet has a single midrib bundle and is in the diploxylic condition.

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Select the correct pair in which one produces seeds, whereas the other does not.

  1. Cyanobacteria and algae

  2. Algae and fungi

  3. Mosses and ferns

  4. Ferns and gymnosperms

  5. Gymnosperms and angiosperms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Phanerogams, also known as spermatophytes, refer to "all seed plants". Gymnosperms are the seed bearing plants wherein seeds are naked i.e. not enclosed by ovary or fruit. Angiosperms are seed bearing plants wherein seeds are enclosed within ovary or fruit. Since both gymnosperms and angiosperms are seed-bearing plants and therefore are included under phanerogams. Pteridophytes (ferns) are categorized under cryptogams, not under phanerogams, as they do not form seed or flowers. Thus, the correct answer is option D.

Multiple choice evs flowers and fruits phanerogams gymnosperms pictorial feature of plant kingdom

Gymnosperms and angiosperms show similarity in 

  1. Leaves, rhizomes and spore

  2. Leaves, stems, roots and seeds

  3. Flat leaves, trunks and naked seeds

  4. Lack of vascular tissue and small leaflets

  5. Needle-like leaves, stems, roots and fleshy fruits
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Both gymnosperms and angiosperms are seed-bearing vascular plants. Gymnosperms are the seed bearing plants wherein seeds are naked i.e. not enclosed by ovary or fruit. Angiosperms are seed bearing plants wherein seeds are enclosed within ovary or fruit. Both have a well-differentiated stem, root and leaves. Thus, the correct answer is option B.