Tag: anatomy of flowering plants

Quizzes (15) Questions (43)

Questions Related to anatomy of flowering plants

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

A simple leaf can be differentiated from the pinnae of a compound leaf on the basis of presence or absence of

  1. number of pinnae

  2. shape of lamina

  3. axillary bud

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

A simple leaf can be differentiated from the pinnae of a compound leaf on the basis of the presence or absence of 'axillary bud'.

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

Root cap of the embryo develops from:

  1. Basal cell

  2. Apical cell

  3. Hypophysis

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

 The formation of the root apex involves derivatives of both the basal and apical cells of the two-cell embryo, the hypophyseal region derived from the topmost cell of the suspensor is incorporated into the embryo proper, giving rise to part of the root cap.

So, the correct option is 'Hypophysis'.

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

Quiescent centre is the zone of

  1. Least mitotic activity in the root apex

  2. Least mitotic activity in the shoot apex

  3. Maximum mitotic activity in the root apex

  4. Maximum mitotic activity in the shoot apex
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A zone of inactive cells is present in the central part of the root apex called quiescent centre.

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

In the root apex, that meristem from which the root cap developsindependently of all other initials of the apical meristem is known as _______________.

  1. Calyptrogen

  2. Casparian strip

  3. Columella

  4. Corpus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Calyptrogen is the specific layer of meristematic cells in the root apex that gives rise to the root cap.

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

Match List-I(Region) with List-II(Contribution to) and select the correct answer using the codes given the lists.

List-I(Region) List-II(Contribution)
a. Apical cells of $2$-celled embryo $1$. Emergence of cotyledons
b. Basal cells of $2$-celled embryo $2$. Differentiation of root and shoot
c. Torpedo stage embryo $3$. Root apex and suspensor
d. Globular embryo $4$. Bulk of the embryo proper
  1. A-$1$, B-$2$, C-$3$, D-$4$
  2. A-$1$, B-$3$, C-$2$, D-$4$
  3. A-$4$, B-$2$, C-$4$, D-$1$
  4. A-$4$, B-$3$, C-$2$, D-$1$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In embryogeny, the apical cell of the 2-celled embryo contributes to the embryo proper, while the basal cell contributes to the suspensor. The torpedo stage involves cotyledon emergence, and the globular stage involves the differentiation of the embryo proper.

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

Consider the following statements.
a. In the roots with endomycorrhizal association, the fungal hyphae penetrate the root cortex and pass through the casparian strip to enter vascular tissue.
b. The globin part of leghemoglobin in nitrogen-fixing root nodules is encoded by the bacterium whereas heme group is synthesized by the host plant.
Which of the statements given is/are correct?

  1. $1$ only
  2. $2$ only
  3. Both $1$ and $2$
  4. Neither $1$ nor $2$
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

Choose the correct answers from the alternatives given.
Which of the following functions is not shared by both the root system and the shoot system of a plant?

  1. Absorb water

  2. Transport water

  3. Transport inorganic nutrients

  4. Transport organic nutrients
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The root system forms the underground system of the plant that absorbs water from the soil along with various organic and inorganic nutrients. It exerts the root pressure due to which the absorbed water is transported to the shoot system.

The shoot system forms the upper part of the plant part. It transports the absorbed water and nutrients to different plant parts.
Hence, the correct answer is 'Absorb water'.