Tag: leaf modification

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Questions Related to leaf modification

Multiple choice evs roots and leaves plant adaptation and modification leaves leaf modification root, stem, and leaves

Aldrovanda is

  1. Fly catcher plant

  2. Water flea trap

  3. Devil's foot

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Aldrovanda vesiculosa, also famous as the waterwheel plant. This plant captures small aquatic invertebrates using water flea traps. The traps are arranged in spirals around a central, free-floating stem. This is one of the rare plant species capable of rapid movement.

So option B is correct.

Multiple choice evs roots and leaves plant adaptation and modification leaves leaf modification root, stem, and leaves

Which modified leaf prevents transpiration?

  1. Tendril

  2. Spine

  3. Pitcher

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A) Tendrils are the modification of leaves that help climbers to climb the support.

C) Spine is the modified structure of entire leaf or part of it that prevent transpiration is xerophytes.
C) Leaf pitcher is the modification of leaf in Nepenthes which takes part in catching and digesting small animals .
So, the correct option is 'Spine'

Multiple choice evs roots and leaves plant adaptation and modification leaves leaf modification root, stem, and leaves

In which plant, leaves are modified due to the deficiency of nitrogen in the soil?

  1. Pea

  2. Snake gourd

  3. Cactus

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

Leaf pitcher is found in Nepenthes is a modified leaf which is converted into a lid to capture small insects and digest it to overcome nitrogen deficiency.

So, the correct option is 'Nepenthes'.

Multiple choice evs roots and leaves plant adaptation and modification leaves leaf modification root, stem, and leaves

In which of the following plant, leaves are modified into the wiry coiled structure?

  1. Opuntia

  2. Potato

  3. Pea

  4. Snake gourd
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Leaves of some plant get modify to form tendrils. These are thin, wiry, and spirally coiled. It holds the support by coiling around it and help the weak stem to climb the support.

Ex-pea, sweet pea and $Glariosa$.
So the correct option is 'Pea'

Multiple choice evs roots and leaves plant adaptation and modification leaves leaf modification root, stem, and leaves

Which of the following leaves are modified to fulfill their nitrogen deficiency?

  1. Onion

  2. Opuntia

  3. Nepenthes

  4. Utricularia
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

  1. Onion leaves are modified to store food and water called scale leaves.
  2. Opuntia or prickly pear leaves modified into spines for defensive purpose.
  3. Nepenthes leaves are modified into leaf-pitcher to trap insects so that they fulfill their nitrogen deficiency.
  4. Utricularia is an insectivorous plant that grows in water and their leaves get modified to leaf-bladder for digesting insects.
So the correct option is 'Nepenthes'

Multiple choice evs roots and leaves plant adaptation and modification leaves leaf modification root, stem, and leaves

Leaf tip tendrils are present in

  1. Smilax

  2. Lathyrus

  3. Pisum

  4. Gloriosa
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Leaf tendrils: In weak-stemmed plants, leaf or a part of leaf gets modified into tendrils i.e., a green coiled threadlike structure which helps in climbing around the support. Gloriosa or Glory Lily has leaf tip modified into tendrils. It is also a type of leaf tendrils.
So,the correct answer is " Gloriosa " .
Multiple choice evs roots and leaves plant adaptation and modification leaves leaf modification root, stem, and leaves

Spines present on the areoles of Opuntia represent

  1. stem

  2. leaves

  3. buds

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

Areoles are the evolutionary modification in the cacti. These modifications give rise to spines and glochids which are the means of self-defense. These spines effectively cover the cacti. These evolved as abortive branch buds while their spines evolved as vestigial leaves.

So, the correct answer is " leaves".

Multiple choice evs roots and leaves plant adaptation and modification leaves leaf modification root, stem, and leaves

Phyllodes are seen in
I) Nepenthes 
II) Australian acacia
III) Opuntia

  1. I only

  2. I and II only

  3. II only

  4. I and III only
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Phyllodes are formed when petioles of some plants become flattened and widened. The petiole of Australian acacia is changed to a planed, leaf-like structure which turns green in color showing photosynthesis. Thus, phyllodes are found in Australian acacia.

So, the correct answer is 'II only'.
Multiple choice evs roots and leaves plant adaptation and modification leaves leaf modification root, stem, and leaves

The pulvinus in 'Touch-me-not plant' plays an important role in

  1. Photosynthesis

  2. leaf fall

  3. Leaf movement

  4. Transpiration
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The leaves close under various other stimuli, such as touching, warming, blowing, or shaking. ... The stimulus can also be transmitted to neighboring leaves. It is not known exactly why Mimosa pudica evolved this trait, but many scientists think that the plant uses its ability to shrink as a defense from herbivores. So, the correct option is "C" (Leaf movement).