Plants Booklet

Question 1

What organs to all seeded plants have and which are the tissue types

Answer 1

Root stem leaves, ground tissue vascular tissue dermal tissue

Question 2

What’s the 2 groups of angiosperms and what’s the difference

Answer 2

Monocots: one seed leaf

Dicots: 2 seed leaves

Question 3

2 types of plant tissues

Answer 3

Meristem: undifferentiated, found in roots and stems
permanent : can’t do mitosis, 3 tissues (dermal ground vascular)

Question 4

Dermal tissue

Answer 4

Covers and protects the soft tissues of plant and controls gas exchange and water absorption

Question 5

Ground tissue

Answer 5

Lies between vascular and dermal, storage of water and sugar in roots, support for stem and vascular tissue, photosynthesis in leaves

Question 6

Vascular tissue

Answer 6

Transport water, sugars and minerals (xylem and ohloem)

Xylem: transport water

Phloem: transports sucrose

Question 7

Transpiration

Answer 7

Movement of water through a plant (root to leaf) and its evaporation through stomata

Question 8

Stomata

Answer 8

Small pores found on the leaf, open or close due to guard cells that are on either side of opening

Question 9

Cohesion

Answer 9

Water molecules attracted to eachother to move up plant (water acts like a long chain and pulls each other up the stem as water molecules leave stomata)

Question 10

Adhesion

Answer 10

Water molecules attracted to xylem to move up plant (water sticks to lignin lining the system so it is less likely to fall)

Question 11

How is water transferred up plant

Answer 11

Root pressure, capillary action and transpiration pull

Question 12

Translocation

Answer 12

The progress of transporting sugar and other organic materials through the phloem of plant. Sugar moves from source to sink.

Question 13

What’s difference between source and sink

Answer 13

Source: where sugar is created through process of photosynthesis, eg palisade and spongy mesophyll

Sink: where sugar will be used/stored for later time eg roots

Question 14

Positive tropism/neg

Answer 14

Plant grows towards stimulus

Neg is when it grows away from

Question 15

What are the 5 tropisms and describe them

Answer 15

Ohototropism: chemical signal that causes plants to elongate and grow cells faster on the site of plant farthest from light

Geotropism: the growth of parts of plants w respect to force of gravity

Thigmontropism: growth of plant in response to touch/contact

Chemotropism: growth response of a plant to a particular chemical. Roots will grow towards useful minerals in soil and away from others.

Hydrotropism: Growth response to water

Question 16

5 plant hormones and describe

Answer 16

Auxin: promotes cell elongation to assist w plants ability to access light water and nutrients

Ethylene gas: causes fruit to ripen and signals leaves to drop off

Gibberellins: growth hormone promotes cell elongation and division

Cytokinins: promotes cell division

Abscisic acid: inhibits growth (stops)