Botany and Plant Science

Nexin is a proteinous inter-doublet linkage that prevents microtubules in the outer layer of axonemes from movement with respect to each other.

In flowering plants, the ovule is the structure that develops into a seed after fertilization. The ovary develops into the fruit.

In flowering plants, the ovary is the part of the flower that matures into the fruit after fertilization. The ovule becomes the seed.

Wood is the secondary xylem tissue that forms the bulk of the stem in woody plants.

Starch is a carbohydrate stored in plants, and leaves are the primary site of photosynthesis where starch is produced and stored. While other parts like stems or seeds can store starch, leaves are the most direct answer in a general botanical context.

It clearly shows difference between the properties of the two flowers.

 Well differentiated reproductive tissues is not a characteristic feature of Pteridophytes.

 This is true. Leaves of monocot show parallel venation whereas leaves of dicots show reticulate venation.

Megasporophyll is the female sexual part which is equivalent to carpel or pistil.

Hydrilla is an aquatic plant, i.e. it lives in water. Function of roots is to hold the plant in the soil and to absorb water from the soil. Since both these requirements get reduced in aquatic plants, so hydrilla has got poorly developed roots.

Potato is a plant which grows vegetatively i.e. from part other than flower or seed. Potato grows from the eye on potato which develops into bud finally giving rise to new plant.

Xerophytes are the plants living in hot and dry places. Their bodies are well adapted to prevent excess water loss. For the same, they have sunken stomata down in the leaves, also leaves are reduced to spines, roots are deep and long enough to absorb more water from the ground. The photosynthesis is performed by thick and waxy stem.

Xerophytes are the plants growing in hot and dry places. For e.g. Cactus is a plant, which grows in deserts. Thus to avoid the loss of excess water through stomata, its leaves are reduced to spine like structures and it is the stem in these plants, which is green in colour and performs the functions of photosynthesis. Also their stem is thick and waxy to prevent loss of water.

The QuiescentcCentre is a group of cells, up to 1,000 in number, in the form of a hemisphere, with the flat face towards the root tip.

Triticum aestivum is hexaploid.