BOTANY EXAM

Question 1

bundle sheath

Answer 1

the tissue surrounding a vascular bundle, see embedded and transcurrent

Question 2

capillary

Answer 2

of hairs etc., very slender

Question 3

cuticle

Answer 3

the water-repellent covering of the outer walls of the epidermis, consisting of wax and cutin.

Question 4

embryo

Answer 4

a young plant contained within a seed, more particularly, the embryo proper is made up of all the derivates of the apical cell of the very early proembryo (i.e. at the 2-celled stage), and also of the hypophysis, the apical cell of the suspensor

Question 5

mesophyl

Answer 5

photosynthetic tissue in the leaf in particular, see palisade, spongy

Question 6

pericarp

Answer 6

the wall of a fruit, developed from the ovary/carpel wall, see endocarp, exocarp, mesocarp.

Question 7

pith

Answer 7

the central region of a stem, the inner part of the stele that is produced by differentiation of the ground meristem, see chambered pith, c.f. cortex

Question 8

root cap

Answer 8

a group of cells at the tip of the root that covers the apical meristem and protects it

Question 9

stele

Answer 9

a column of primary vascular tissue in the root and stem and any tissue that it surrounds

Question 10

stomata

Answer 10

a pore, especially a pore in the epidermis of a leaf or other aerial organ surrounded by two guard cells providing for gaseous exchange between plant tissues and the atmosphere,

Question 11

tiller

Answer 11

a term for a leafy erect or ascending non-flowering shoot

Question 12

apoplast

Answer 12

the continuum formed by the interconnected cell walls in plants,

Question 13

sieve tube

Answer 13

a conducting tube in the phloem made up of a number of sieve elements attached end to end.

Question 14

sieve plate

Answer 14

an area of the end wall of a sieve element; it has has larger pores than are found elsewhere on the wall, the pores being open channels.