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.
The correct answer would be the last one: "evolved from past organisms." This theory basically just states that all living organisms evolved from a single common ancestor. Hope this helped! :)
Answer:
The value of the expression is as follows:
a = 10; B = 2.5; c = 7
Explanation:
a = 4B = 3 + c = 10
Step 1
split equation into parts, then we have
3 + c = 10
c = 10 - 3
c = 7 (the value of c is 7)
Step 2
Rewrite equation as a = 4B = 10, then split again
4B = 10
Then, B = 10➗ 4
B = 2.5 ( the value of B is 2.5)
Step 3
Take the last part of the equation
a = 10 (the value of a is 10)
Note the "equal sign =" put whatever is on the left hand side to be equal to the right hand side
Answer:
2 4 5
Explanation:
or b d e evolution is not an individual occurrence
