Tag: pictorial feature of plant kingdom

Questions Related to pictorial feature of plant kingdom

Secondary growth is absent in

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Monocotyledons

  2. Dicotyledons

  3. All angiosperms

  4. Gymnsoperms

Show answer
Correct Option: A
Explanation:
(A) secondary growth is absent in monocotyledons due to absent of cambium ring between xylem and phloem.
(B) Dicotyledons show secondary growth due to the presence of the cambium ring between xylem and phloem.
(C) Angiosperms include monocot and dicot in which monocot does not show secondary growth due to the absence of cambium ring.
(D)  secondary growth present also in gymnosperms due to the presence of the cambium ring between xylem and phloem.
So, the correct answer is 'Monocotyledons'.

The beginning of photosynthesis in a dicot plant is marked by the formation of

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Cotyledon

  2. Endosperm

  3. Embryonic root

  4. Apical meristem

  5. Lateral meristem

Show answer
Correct Option: A
Explanation:

Dicots are the flowering plants recognized by the presence of two cotyledons. Initially, in the seed, the endosperm provides nourishment. The cotyledons are the initial primary leaves formed after the germination of seed. These are the small green leaves which mark the start of the photosynthesis and the plant can synthesize food on their own. 

Thus, the correct answer is option 'Cotyledon'.

Which group of plants include maple trees, apple trees, orchids and palms?

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Gymnosperms

  2. Bryophytes

  3. Angiosperms

  4. Chlorophytes

  5. Rhodophytes

Show answer
Correct Option: C

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

biology pictorial feature of plant kingdom phanerogams gymnosperms 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

Show answer
Correct Option: B

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

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Cyanobacteria and algae

  2. Algae and fungi

  3. Mosses and ferns

  4. Ferns and gymnosperms

  5. Gymnosperms and angiosperms

Show answer
Correct Option: E
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.

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

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Seed structure

  2. Floral parts

  3. Leaf venation

  4. Spongy mesophyll

  5. Vascular organization

Show answer
Correct Option: D
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

Identify the dissimilarity between monocots and dicots.

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  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

Show answer
Correct Option: E
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.

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

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  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.

Show answer
Correct Option: B
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. 

What correctly defines mycorrhiza?

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  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.

Show answer
Correct Option: E
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. 

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

biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

  1. Angiosperms

  2. Gymnosperms

  3. Cryptogams

  4. All of the above

Show answer
Correct Option: A
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.