Answer:
a) i) Xylem
ii) Upper epidermis
iii) Stoma
iv) Chroloplast
v) Palisade cell layer
b) By a waxy layer on the cuticle of the leaf
Explanation:
The plant's leaves have a large surface area that is capable of absorbing sunlight. The plant's waxy layer in the surface of the leaf protects it from the loss of water, as well as of diseases caused by the entry of microorganisms. The palisade cell's surface is a single layer of cells underneath the upper epidermis that is adapted to absorb light energy.
The waxy layer is a primary physical barrier composed of insoluble polymers and lipids whose function is to protect the leaves against the entry of harmful organisms including virus, bacteria and fungus. Moreover, the plant's waxy cuticle is also a barrier that prevents the loss of water and solutes.
Answer:
Schools which do not have extracurricular activities do kill creativity. A school should be a place where a child is not only given the knowledge of books but also the creativity of a child should be enhanced. As psychology suggests, every child is creative in his/her own manner. Hence, a school should have different extracurricular activities which enhances the skills of each child. Teachers and parents need to understand that if his/her child is not good in a particular field, it might be that the child might be outstanding in another creative field.
1. Organ
2. Nucleus
3. Diffusion