Tag: leaves

Questions Related to leaves

Which of the following are called food factories of the plants?

evs roots and leaves leaves root, stem, and leaves basics of roots and stem plant adaptation and modification

  1. Leaves

  2. Stem

  3. Roots

  4. Flowers

Show answer
Correct Option: A
Explanation:
The part of the plant which produces food is a leaf. Leaves prepare food in presence of sunlight by a process called photosynthesis. In this process, food is produced by utilizing water and carbon dioxide in the presence of sunlight. Therefore, leaves are called food factories of the plants.
So, the answer is A.

Match the column I with column II and select correct option.

Column-I Column-II
(a) Pedicel i Reduced leaf
(b) Peduncle ii Stalk of the flower
(c) Bract iii Stalk of the leaf
(d) Petiole iv Inflorescence axis
evs roots and leaves leaves root, stem, and leaves basics of roots and stem plant adaptation and modification

  1. a-ii, b-iv, c-i, d-iii

  2. a-iii, b-iv, c-i, d-ii

  3. a-i, b-iii, c-iv, d-ii

  4. a-iv, b-i, c-ii, d-iii

Show answer
Correct Option: A

Which of the following part of the plant performs photosynthesis?

evs roots and leaves leaves root, stem, and leaves basics of roots and stem plant adaptation and modification

  1. Leaves

  2. Stem

  3. Roots

  4. Root nodules

Show answer
Correct Option: A
Explanation:

The plant is morphologically divided into roots, stem and leaves.

  1. Root that forms from the radicle of the embryo and is positively geotropic helps in the absorption of water and mineral from the soil.
  2. The stem that forms from the plumule of the embryo and holds various different part of the plant is positively phototrophic and provide mechanical support to stem.
  3. Leaves that originate from the stem and have a green coloured pigment called chlorophyll is the kitchen of plant and helps to convert the inorganic substance into organic substance.
  4. Root nodules are present in legume plants for the nitrogen fixation.
So, the correct answer is 'Leaves'.

Epiphyllous buds develop from

evs roots and leaves leaves root, stem, and leaves basics of roots and stem plant adaptation and modification

  1. Leaf surface

  2. Leaf axil

  3. Leaf base

  4. Stipule

Show answer
Correct Option: A

Which part of the leaf is useful for exchanging gases between the plant and the atmosphere?

evs roots and leaves leaves root, stem, and leaves basics of roots and stem plant adaptation and modification

  1. Midrib

  2. Stomata

  3. Veins

  4. Petiole

Show answer
Correct Option: B
Explanation:

A)The midrib is the large strong the central vein in the middle of the leaf.
B)Stomata are the part of leaf present on the epidermis and help in the gaseous change.
C)Veins are the vascular tissue of leaf located at the mesophyll part.
D)The petiole is the part of a leaf that joins the lamina to the base.
So the correct option is 'Stomata'

Which one of these is not a part of a leaf?

evs roots and leaves leaves root, stem, and leaves basics of roots and stem plant adaptation and modification

  1. Midrib

  2. Lamina

  3. Leaf Base

  4. Stamen

Show answer
Correct Option: D
Explanation:

A) The midrib is the large strong central vein in the middle of the leaf.
B) The lamina is the broad green part of the leaf in which photosynthesis takes place.
C) Leaf base is the lowermost part of the leaf from where it attaches to stem or branch.
D) Stamen is the male reproductive part present on a flower.
So the correct option is 'Stamen'.

Which of the following varieties of cotton do not attract bollworm?

evs roots and leaves plant adaptation and modification leaves root, stem, and leaves

  1. Hairy leaves

  2. Solid stem

  3. Smooth leaved and nector less

  4. High aspartic acid and low $N _2$ content

Show answer
Correct Option: A

Heterophylly means 

evs roots and leaves plant adaptation and modification leaves root, stem, and leaves

  1. Occurrence of different color of leaves in plant

  2. Occurrence of different size of roots in a plant

  3. Occurrence of more than one type of leaves

  4. All

Show answer
Correct Option: C
Explanation:

Plants with both submerged and floating or emerged leaves show hetrophylly or occurrence of more than one type of leaves. Eg Ranunculus, Aquatilis 

The leaf of Mimosa pudica is

evs roots and leaves plant adaptation and modification leaves root, stem, and leaves

  1. Simple

  2. Bifoliate

  3. Bipinnate

  4. Trifoliate

Show answer
Correct Option: C
Explanation:

The leaf of Mimosa pudica is bipinnately compound. It contains leaflets arranged in opposite arrangement on the rachis. It has unipnnate leaves instead of single leaflets in the opposite direction on the rachis.

Thus, the correct answer is 'Bipinnate.'

A simple pinnate compound leaf is?

evs roots and leaves plant adaptation and modification leaves root, stem, and leaves

  1. Decompound

  2. Unipinnate

  3. Bipinnate and tripinnate

  4. Both B and C

Show answer
Correct Option: B