vce biology quiz 1
TRANSCRIPT
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VCE BIOLOGY QUIZ 1
www.drlakshmisharma.comDr Lakshmi Sharma
NO LIMITS TO LEARNING! BELIEVE & YOU CAN ACHIEVE!
Plants response to Environment & Regulatory mechanisms Animals
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Face Off
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Are you ready?
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Question 1
What is Photoperiodism?
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Photoperiodism is the plants
response to the length of light and
dark periods
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Question 2
What is Thigmotropism?
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The plants response to touch
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Question 3
What are the 2 types of hormones in the body?
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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
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Question 4
Explain short day plants?
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Short Day Plants require long nights to trigger flowering.Late summer, autumn or winter
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Question 5
What is the main difference between the nervous & endocrine system?
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Endocrine system is slowerE.S hormones & glands N.S neurons
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Question 6
What is vernalisation?
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Vernalisation:period of winter
cold that stimulates flowering
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Question 7
What is A ?
A
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A
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Question 8
Where is Ethylene produced?
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Ripening fruits;flowers, seeds, leaves & roots.
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Question 9
Explain/examples –ve & +ve geotropism?
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Roots +ve & leaves –ve geotropism
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Question 10
What is the action potential in neurons?
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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.
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Question 10
What are the 2 components of the central nervous system?
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The brain & the spinal cord
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Question 11
What happens to the cells in a plant shoot when Auxins are released?
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Elongate – this causes the tip to bend towards the light
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Question 12
Give 1 example of how plants differ from animal hormones?
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Plants have;
1. Fewer Hormones
2. Relatively simple hormones
3. Hormone (not in glands) produced
by cells receiving the stimulus
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Question 13
Name 4 types of receptors in humans?
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PhotoreceptorsVisible light, infrared radiationChemoreceptorsTaste, smell, communicationOxygen, CO2, pH, water, salts etcMechanoreceptorsHearing, balance, pressure, touchThermoreceptors Heat and cold
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Question 14
How do plants survive the harsh winters and drought?
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Plants survive harsh winters and
droughts by:
Seed dormancy
Bud dormancy
Vernalisation
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Question 15
Which hormone is responsible for fruit ripening?
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Ethylene
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Question 16
Give an example of a reflex action?
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Knee jerk, hand on hot plate etc
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Question 17
Abscisic Acid controls stomata movement – why do these close in drought conditions?
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To prevent water lose from plant (prevent dehydration)
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Question 18
This is an example of what?
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+ve Geotropism
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Question 19
Which hormone promotes growth of the entire plant?
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Gibberellins
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Question 20
Name the 2 types of nervous systems?
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Central Nervous System
Peripheral Nervous System
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Question 21What is A –state its function?
A
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How do plants respond to the environment
Question 22
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The environmental stimulus causes a sensitive cell to produce a particular hormone
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Question 23How would you define this ?
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Withdrawal Reflex
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Question 24Which hormone is at play in the photo?
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Abscisic Acid ABA
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END OF QUIZScore Please !!!