The flowers are Zygomorphic in:
- Mustard
- Gulmohar
- Cassia
- Datura
- Chilli
Choose the correct answer from the options given below:
The flowers are Zygomorphic in:
- Mustard
- Gulmohar
- Cassia
- Datura
- Chilli
Choose the correct answer from the options given below:
- (a), (b), (c) only
- (b), (c) only
- (d), (e) only
- (c), (d), (e) only
The Correct Option is B
Solution and Explanation
In botany, zygomorphic flowers are those that can be divided into two mirror-image halves in only one plane. Let's examine the given plants to determine which ones have zygomorphic flowers:
- Mustard (Brassica): Mustard has actinomorphic flowers that can be divided into two equal halves in multiple planes.
- Gulmohar (Delonix regia): Gulmohar flowers are zygomorphic and only symmetrical in one plane.
- Cassia (Cassia fistula): Cassia also has zygomorphic flowers, with symmetry in only one plane.
- Datura (Datura): Datura has actinomorphic flowers.
- Chilli (Capsicum): Chilli plants feature actinomorphic flowers, which are radially symmetrical.
Thus, the flowers of Gulmohar and Cassia are zygomorphic. Therefore, the correct option is:
(b), (c) only
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Concepts Used:
Morphology of Flowering Plants
Morphology in flowering plants tells us that every plant has two systems such as a root system and a shoot system. The root system digs deep into the ground and structures a system of its own. On the other hand, the shoot system is the one that is above ground level and includes various plant parts.
Root System
The descending part of the plant grows under the soil roots. During the germination process, the radicle from the seed grows earthward and branches out. The branches along with the primary root are called the root system. Roots lack chlorophyll and therefore they are not green in color. Roots are positively geotropic and hydrotropic, that is, they grow downwards ground and water, and negatively phototropic, which is growing away from light.
There are three types of root systems found in plants are as follows:
- TapRoot System
- Fibrous Root System
- Adventitious Root System
Shoot System
The stem is also an essential element of the plant. It is the ascending portion of the plant axis that bears branches, flowers, leaves, and fruits, as well as aiding in water and mineral conduction. It is the plant's aerial portion, brought about from an embryo's plumule or germinating seeds. Young stems are ordinarily green, but they finally turn woody and brown.