VCE BIOLOGY QUIZ 1

www.drlakshmisharma.comDr Lakshmi Sharma

NO LIMITS TO LEARNING! BELIEVE & YOU CAN ACHIEVE!

Plants response to Environment & Regulatory mechanisms Animals

Face Off

Are you ready?

Question 1

What is Photoperiodism?

Photoperiodism is the plants

response to the length of light and

dark periods

Question 2

What is Thigmotropism?

The plants response to touch

Question 3

What are the 2 types of hormones in the body?

1. Synthesised from fatty acids

Small & lipid-soluble, easily pass through membranes – nucleus-act on genes

Steroid hormones – testosterone & oestrogen

2. Synthesised from amino acids

Water soluble, cannot pass through membranes – bind to receptors plasma membrane, responses in cell.

Adrenaline & growth hormones

Question 4

Explain short day plants?

Short Day Plants require long nights to trigger flowering.Late summer, autumn or winter

Question 5

What is the main difference between the nervous & endocrine system?

Endocrine system is slowerE.S hormones & glands N.S neurons

Question 6

What is vernalisation?

Vernalisation:period of winter

cold that stimulates flowering

Question 7

What is A ?

A

A

Question 8

Where is Ethylene produced?

Ripening fruits;flowers, seeds, leaves & roots.

Question 9

Explain/examples –ve & +ve geotropism?

Roots +ve & leaves –ve geotropism

Question 10

What is the action potential in neurons?

Nerve impulse or action potential is a wave of electrical change along the axon membrane stimulation involving the exchange of sodium and potassium ions. At the dendrite it stimulates the release of a chemical transmitter, which diffuses across a synapse.

Question 10

What are the 2 components of the central nervous system?

The brain & the spinal cord

Question 11

What happens to the cells in a plant shoot when Auxins are released?

Elongate – this causes the tip to bend towards the light

Question 12

Give 1 example of how plants differ from animal hormones?

Plants have;

1. Fewer Hormones

2. Relatively simple hormones

3. Hormone (not in glands) produced

by cells receiving the stimulus

Question 13

Name 4 types of receptors in humans?

PhotoreceptorsVisible light, infrared radiationChemoreceptorsTaste, smell, communicationOxygen, CO2, pH, water, salts etcMechanoreceptorsHearing, balance, pressure, touchThermoreceptors Heat and cold

Question 14

How do plants survive the harsh winters and drought?

Plants survive harsh winters and

droughts by:

Seed dormancy

Bud dormancy

Vernalisation

Question 15

Which hormone is responsible for fruit ripening?

Ethylene

Question 16

Give an example of a reflex action?

Knee jerk, hand on hot plate etc

Question 17

Abscisic Acid controls stomata movement – why do these close in drought conditions?

To prevent water lose from plant (prevent dehydration)

Question 18

This is an example of what?

+ve Geotropism

Question 19

Which hormone promotes growth of the entire plant?

Gibberellins

Question 20

Name the 2 types of nervous systems?

Central Nervous System

Peripheral Nervous System

Question 21What is A –state its function?

A

How do plants respond to the environment

Question 22

The environmental stimulus causes a sensitive cell to produce a particular hormone

Question 23How would you define this ?

Withdrawal Reflex

Question 24Which hormone is at play in the photo?

Abscisic Acid ABA

END OF QUIZScore Please !!!