question_answer

Direction: Refer to the given dichotomous key and answer the following question.

I. (a) The cells of tissue have walls.  - Go to II

(b) The cells of tissue have no walls. - Go to III

II. (a) The cells are living. - Go to IV

(b) The cells are dead. - Go to V

III. (a) The tissue lines the oviducts. – R

(b) The tissue transports nutrients. – S

IV. (a) Cells store air. – P

(b) The tissue conducts nutrients. – Q

V. (a) The tissue conducts water. – T

(b) It is only a mechanical tissue. - U

Select the incorrect option regarding tissues P, Q, R, S, T and U.

A) P is found in aquatic floating plants whereas Tis greatly reduced or absent in aquatic plants.

B) R and S are animal tissues while P and Q are plant tissues.

C) S can be xylem, Q can be blood and U can be parenchyma.

D) R is ciliated epithelial tissue whereas U possesses uniform wall thickenings of lignin.