Question

Which of the following is a rootless plant?
A. Nymphaea
B. Sagittaria
C. Ceratophyllum
D. Vallisneria

Answer 1

Hint: Plants are extremely important to life on earth.
Plants provide food, shelter, medicine and oxygen to breathe.
In fact, everything we eat comes directly or indirectly from plants.
Basic parts of the plant are: Root, stem, leaves, fruits, flowers and seeds.

Complete answer: In order to solve this question, we need to know about the roots and its function.
The roots are the Organs of a plant that generally lies below the surface of the soil.
Roots can also aerial or aerating, that is, growing up above the ground or especially above water.
The first root that comes from a plant is called Radical.

The main function of roots is:
1. Absorption of water and nutrients and inorganic matter.
2. Anchoring the plant body and supporting them.
3. Storage of food and nutrients.
4. Vegetative reproduction.
After the dissection of roots, the arrangement of cells is root hair, epidermis, epilema, cortex, endodermis, and pericycle.
A true root system consists of Primary and secondary roots.
Rootless plant: Rootless plants are which lack roots.
For example: Cuscuta and urticaria etc.

> Option 1: Nymphaea: Nymphaea is rooted hydrophytes with floating leaves.
> Option 2: Sagittaria: Sagittaria is rooted emergent hydrophytes.
> Option 3: Ceratophyllum: Ceratophyllum is submerged floating hydrophytes.
It remains completely under water but is not rooted in mud.
Ceratophyllum is a cosmopolitan genus of flowering plants, commonly found in ponds, marshes, and quiet streams in tropical and in temperate regions.
> Option 4: Vallisneria: Vallisneria is rooted submerged hydrophytes.

So, the correct option is option c. ceratophyllum.

Note: Leafless plants are those plants which lack leaves.
Some of the leafless plants are:
Cactus, Phantom orchid, Snow orchid, Squawroot, and Rafflesia