Notes-35

Question 0

Plant anatomy

Answer 0

study of internal structure of plants

Ex: cells, tissue

Question 1

Plant morphology

Answer 1

study of external structure of plants

Ex: parts of flower

Question 2

Angiosperms

Answer 2

flowering plants

Question 3

2 types of angiosperm

Answer 3

monocot- 1 seed leave

dicot- 2 seed leave

Question 4

2 basic systems of plants

Answer 4

Root system & shoot system(stems, leaves, & flower)

Question 5

Xylem

Answer 5

conveys water & dissolved minerals to the shoots

Question 6

Phloem

Answer 6

conveys food from shoots to roots & other non photosynthetic parts; and from storage roots to actively growing shoots

Question 7

Roots depend on shoots for-

Answer 7

sugar & other organic nutrients

Question 8

Shoots depend on roots for-

Answer 8

minerals, water, & support

Question 9

Root system

Answer 9

anchors plant, absorbs & conducts water & nutrients, & stores food

Question 10

2 major types of root systems

Answer 10

taproot & fibrous root

Question 11

Taproot system

Answer 11

• dicots
• 1 large vertical root produces many smaller secondary roots
• provides anchorage
• some are modified to store large amount of reserve food

Question 12

Fibrous root system

Answer 12

• monocots
• mat of threadlike roots spread below soil surface
• provides extensive exposure to soil water & minerals
• roots concentrated in upper cm of soil to avoid soil erosion

Question 13

Root hairs

Answer 13

• enhances ability to absorb water
• increase surface area of root
• numerous near root tips

Question 14

Mycorrhizae

Answer 14

• also enhance water & mineral absorption

- symbiotic associations btw roots & fungi

Question 15

Adventitious roots

Answer 15

-roots arising above ground from stems or leaves