Question

(i). What does the picture depict? (ii). Explain the condition of the cell. (iii). What
happens when the cell is kept in sugar solution? (iv). When the cell reaches its
original position?
(b). Give reasons for the following: (i).Dried grapes swell in water. (ii).A well-watered
plant shows wilting of leaves during hot summer. (iii). Coastal plants transpire less
than the desert plants. (iv). Guard cells become flaccid during night. (v).Flow of
blood is unidirectional in blood vessels.
2.(a).​

Answer 1

Answer:

Solution:

We know that,

sec2θ – tan2θ = 1

(sec θ + tan θ) (sec θ – tan θ) = 1

(7) (sec θ – tan θ) = 1 …[sec θ + tan θ = 7; (Given)

∴ sec θ – tan θ = 17