Tag: anatomy of flowering plants

Questions Related to anatomy of flowering plants

The cells of the quiescent centre are characterised by
biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

  1. having dense cytoplasm and prominent nuclei

  2. having light cytoplasm and small nuclei

  3. dividing regularly to add to the corpus

  4. dividing regularly to add to tunica

Show answer
Correct Option: B
Explanation:

The cells of the quiescent centre are characterised by 'light cytoplasm and small nuclei'.

Choose the correct answers from the alternatives given :
Plant roots function to

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

  1. anchor the plant

  2. store the products of photosynthesis

  3. produce hormones that stimulate stem growth

  4. all of the above

Show answer
Correct Option: D
Explanation:

Root is the most important organ of a plant which generally lies below the soil in the vascular plants.

The main functions of the root are:
a. It anchors the plants in soil and thus provides mechanical support to plants to stand upright.
b. Photosynthesis products are usually stored in roots. eg. Raddish, carrots etc.
c. Roots synthesize certain hormone that helps in the growth of the plant.

So the correct answer is "All of the above"

Choose the correct answers from the alternatives given.
When a leaf trace extends from a vascular bundle in a dicot stem, what would be the arrangement of vascular tissues in the veins of the leaf

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

  1. Xylem would be on top and the phloem on the bottom

  2. Phloem would be on top and the xylem on the bottom

  3. Xylem would encircle the phloem

  4. Phloem would encircle the xylem

Show answer
Correct Option: A
Explanation:

Vascular bundles are scattered in the spongy parenchyma. These can be seen in the veins and the midrib of the leaves. The dicot leaves possess reticulate venation in which veins form a network. The xylem forms the top layer and phloem is present at the bottom in the arrangement of the vascular tissues. The veins vary in thickness in the reticulate venation.

Hence, the correct answer is 'Xylem would be on top and the phloem on the bottom'.