internode d. intercalary meristems . Passage cells are thin-walled cells found in (CBSE -AIPMT ) a. endodermis of roots facilitating rapid transport of water from cortex to pericycle b.
phloem elements that serve as entry points for substances for transport to other plant parts c. testa of seeds to enable emergence of growing embryonic axis during seed germination d. central region of style through which the pollen tube grows towards the ovary . Which one of the following is not a lateral meristem (CBSE -AIPMT ) a.
interfascicular cambium b. phellogen c. intercalary meristem d. intrafascicular cambium .
A common feature of vessel elements and sieve tube elements is (CBSE- AIPMT ) a. enucleate condition b. presence of P. Protein c.
thick secondary wall d. pores on lateral walls . In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order (CBSE -AIPMT ) a. root cap, cell division, cell enlargement, cell maturation b.
root cap, cell division, cell maturation, cell enlargement c. cell division, cell enlargement, cell maturation, root cap . Cortex is the region found between (NEET II – ) a. epidermis and stele b.
pericycle and endodermis c. endodermis and pith d. endodermis and vascular bundle . Read I – IV and find the correct order of components from outer side to inner side in a woody dicot stem (CBSE -AIPMT – ) (I) secondary Cortex (II) wood (III) secondary phloem (IV) phellem a.
III, IV, II and I b. I, II, IV and III c. IV, I, III and II d. IV, III, I and II .
You are given a fairly old piece of a dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two? (CBSE -AIPMT ) a. secondary xylem b.
secondary phloem c. protoxylem d. cortical cells . Heart wood differs from sapwood in (CBSE -AIPMT ) a.
the presence of rays and fibres b. the absence of vessels and parenchyma c. having dead and non-conducting elements d. being susceptible to hosts and pathogens