Tag: phanerogams

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Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Which of the following characteristics are present in both gymnosperms as well as angiosperms?

  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, stem roots and fleshy fruits
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Both gymnosperms and angiosperms are seed plants (spermatophytes) that possess true roots, stems, and leaves.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Select the correct pair in which one produces naked seeds, whereas the other produces seeds enclosed in maternally derived tissue.

  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
E 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 are categorized under cryptogams, not under phanerogams, as they do not form seed or flowers. Thus, the correct answer is option E.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

All of the following characteristics differentiates the monocot and dicot, except

  1. Seed structure

  2. Floral parts

  3. Leaf venation

  4. Spongy mesophyll

  5. Vascular organization
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
 Monocots  Dicots
 Embryo with single cotyledon  Embryo with two cotyledons
 Pollen with single furrow or pore  Pollen with three furrows or pores
 Flower parts in multiples of three  Flower parts in multiples of four or five
 Major leaf vein parallel  Major leaf veins reticulated
 Stem vascular bundles scattered  Stem vascular bundles in a ring
 Roots are adventitious  Roots develop from radicle
 Secondary growth absent  Secondary growth often present
Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Identify the dissimilarity between monocots and dicots.

  1. Monocot embryos form two leaves, dicot embryos form a single leaf

  2. Monocot flowers may consist of five petals, dicot flowers may consist of six petals

  3. Monocot leaves have a branching network of veins, dicot leaves have parallel veins

  4. Monocot roots consist of many small roots growing from a taproot, dicot roots lack a taproot

  5. Monocot vascular tissue is arranged randomly in the stem, dicot vascular tissue is arranged in a ring
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The flowering plants or Angiosperms are classified into two groups monocots and dicots on the basis of the nature of embryo in the seed. In monocots , the  vascular tissue is scattered throughout the stem with no particular arrangement and has no cortex. It has single cotyledon in seeds and parallel venation in leaves. Whereas, in dicots, the vascular tissue is arranged in a ring and  is divided into a cortex and stele. It has two cotyledons in seeds with reticulate venation in leaves. Thus, the correct answer is option E.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

A closer look at the veins of a leaf of a given plant depicts the parallel arrangement. What can be concluded from this information?

  1. The plant is a dicot.

  2. The plant is a monocot.

  3. The plant is a gymnosperm.

  4. The plant is an angiosperm.

  5. The plant is a bryophyte.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Venation is the structure of the veins of the leaf. Veins transport liquids and nutrients to the cells of the leaves, and they carry photosynthetic products back to the remaining parts of the tree. Monocot leaves possess parallel venation, meaning the veins of the leaf run in parallel lines. Examples of these types of leaves include grasses, lilies and tulips. 

Thus, the correct answer is option B. 

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

What correctly defines mycorrhiza?

  1. Plants that have no vascular tissue.

  2. Nitrogen fixing bacteria that live in nodules on the roots of legumes.

  3. Primitive plants like mosses, which show a dominant gametophyte stage.

  4. Vascular bundles in the stems of tracheophytes.

  5. Symbiotic structures living in the roots of plants that increase uptake of nutrients from the soil.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Mycorrhizae are the symbiotic fungi that reside in roots of higher plants and increase soil fertility by nitrogen fixation. The fungus obtains carbon compounds produced by photosynthesis from roots while the plants obtain minerals, such as phosphorus extracted by fungal threads from the soil. Thus, the correct answer is E. 

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Which of the following trees/plants have seeds enclosed in the fruit?

  1. Angiosperms

  2. Gymnosperms

  3. Cryptogams

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The angiosperms are the flowering plants in which the enclosed seeds are produced. After fertilization, the ovules transform to form the seeds and the ovary develops to form the fruit. The seeds are enclosed within the fruit as compared to gymnosperms in which the seeds are naked. 

Thus, the correct answer is option A. 

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Which of the following is not the characteristic feature of flowering plants?

  1. They include non-woody trees and shrubs.

  2. They have stems, leaves and roots.

  3. They produce seeds.

  4. They have finely divided leaves called fronds.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pteridophytes are the plants in which the leaves are divided into small leaflets called fronds. The angiosperms are the flowering plants which include the non-woody trees and shrubs. The plant body is divided into stem, roots, and leaves. These are seed-producing plants and the seeds are covered with a seed coat. 

Thus, the correct answer is option D. 

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Which of the following part is present in angiosperms?

  1. Petals

  2. Seed coats to protect seeds

  3. Fleshy fruit

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The angiosperms are the only plants which can produce flowers which are involved in the sexual reproduction. The petals are the parts of the flowers. The seeds are produced which are covered with the seed coat. There is the production of a fleshy fruit formed by the ovary after fertilization takes place. 

Thus, the correct answer is option D.