Plant connect pt 2

Question 1

Monocot roots have centrally located ground tissue called pith, surrounded by a ring of xylem and phloem bundles.
True
False

Answer 1

true

Question 2

Strawberry plants vegetatively reproduce by forming new plants where the nodes of stolons touch the ground.
True
False

Answer 2

true

Question 3

Which of the following structures is a stem adaptation instead of a root adaptation?

Answer 3

stolons

Question 4

Farmers have been able to genetically engineer a wide variety of crops that possess an enormous diversity of traits. If a farmer wanted to increase the ability of his crops to access ground water that is several meters below ground which type of root system would he want?

Answer 4

taproot

Question 5

Stomata allow carbon dioxide into the leaf and water out of the leaf under normal environmental conditions.
True
False

Answer 5

true

Question 6

Essential plant nutrients include carbon, potassium, calcium, and nitrogen.
True
False

Answer 6

true

Question 7

Which of the following ions is associated with auxin and used during signal transduction that causes a plant to bend towards a light sources?

Answer 7

H+

Question 8

Removing the top of a plant to create fuller growth involves which of the following hormones?

Answer 8

auxins

Question 9

Which of these external stimuli produce movement of a plant toward light?

Answer 9

positive phototropism

Question 10

Horticulturists often use ______ and other growth regulators applied as a paste to plant cuttings to stimulate root formation.

Answer 10

Auxin

Question 11

______ is often referred to as the “stress” hormone since it initiates and maintains seed and bud dormancy.

Answer 11

Abscisic acid

Question 12

Which of the following plant hormones is associated with the closure of stomata when a plant experiences water stress?

Answer 12

abscisic acid

Question 13

Which of the following plant hormones was discovered in infected rice seedlings that grew extremely tall and slender with “foolish seedling disease”?

Answer 13

gibberellins

Question 14

Photoperiodism requires

Answer 14

a biological clock which can measure time and a photoreceptor called phytochrome

Question 15

Thigmomorphogenesis is a touch response where the whole plant responds to an environmental stimulus.
True
False

Answer 15

true

Question 16

Went’s experiment in 1926 with oat coleoptiles showed that agar that absorbed auxin from the tips would cause a tipless shoot to curve away from the side where he had placed the agar, suggesting that auxin causes cells to elongate.
True
False

Answer 16

true

Question 17

In order for hormones like auxin to be used as a chemical signal within a plant it must travel through the xylem to reach the site of activity.
True
False

Answer 17

false