quiz no. 3 renu educational group
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BY:- VIJAY SIR MOB No- +918799650833TRANSCRIPT
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Present
INTERACTIVE
MULTIPLE CHOICE
QUESTIONS
These multiple choice questions in some cases, there may be
more than one acceptable answer.
For this reason, even if you select a correct answer at your
first attempt, it is worth looking at all the alternatives
(a) to see if there is a better answer and
(b) to see why some of the alternatives are unacceptable.
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Test3 FLOWERING PLANTS
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Hi
I am BETTY.Your quiz instructor.
I ask you some question OK.
R U Ready
QUESTION 1
Question 1
In a flowering plant, the spongy mesophyll is to be found in …
(a) the roots
(b) the stem
(c) the leaf
(d) the fruit
Question 2
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No
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No
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palisade
mesophyll
spongy
mesophyll
Vertical section through leaf
1mm
Yes
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No
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Question 2
In a flowering plant, sugars are transported …
(a) upwards in the xylem
(a) upwards in the phloem
(c) upwards or downwards in the phloem
(d) upwards or downwards in the xylem
Question 3
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Water and mineral ions are transported in the xylem but not
sugars
No
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Yes and No
Sugars are transported in the phloem but not exclusively in an
upward direction
No
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Yes
Sugars are transported in the phloem. The
direction may be upwards, e.g. from the leaves to
the growing point or the fruits, or downwards, e.g.
from the leaves to the roots or storage organs.
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Water and mineral ions are transported in the xylem but not
sugars
No
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Question 3
The root of a flowering plant absorbs water and mineral ions mainly
through …
(d) the xylem
(c) the phloem
(b) the root hairs
(a) the epidermis
Question 4
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The epidermis is largely impermeable except in the region
where root hairs develop
No
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Transverse section
through a root
root hair
epidermis
phloem
xylem
0.0
5m
m
Root hair cell
root
hair
Yes
The root hairs are
extensions from some of
the epidermal cells.
They have very thin cell
walls and absorb water
and mineral ions.
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The phloem conducts sugars and amino acids to the root but is
not involved in the uptake of water
No
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The xylem carries water from the root to the rest of the plant
but it is not the structure involved in the entry of water
No
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Question 4
The force responsible for water travelling up a tree is generated
mainly by …
(d) osmosis
(c) active transport
(b) root pressure
(a) evaporation from the leaves
Question 5
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Yes
Evaporation of water from the
leaves creates a tension which
draws water up the trunk
evaporation
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Root pressure can force water some distance up the trunk but
is insufficient to take it all the way
No
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Active transport enables the roots to take up dissolved
substances against a diffusion gradient. It is not responsible
for the flow of water up the trunk
No
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Osmosis generates root pressure but this is insufficient to
force water all the way up the trunk
No
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Question 5
Which of the following are the reproductive organs of a flowering
plant?
(d) Stamens and ovary
(a) Petals and sepals
(b) Style and stigma
(c) Pollen nucleus and egg cell
Question 6
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The sepals protect the flower when it is in bud. The colour and
scent of the petals (in insect-pollinated plants) attract insects
which pollinate the flower
No
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The style and stigma are attached to the ovary and play a part
in the transfer of the pollen nucleus to the egg cell in the
ovule
No
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The pollen nucleus and the egg cell are the gametes. The
pollen nucleus is the male gamete and the egg cell is the
female gamete
No
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Yes
petal
sepal
stamen
ovary
style and
stigma
Stamens are the male
organs and the ovary
is the female organFlower structure of Stitchwort
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Question 6
The seeds in this fruit will be dispersed by …
(d) animals
(c) wind
(b) water
(a) an explosive method
Question 7
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Yes
The pod (fruit) wall dries out,
splits and curls back suddenly,
flicking out the seeds.
Examples are gorse and lupin
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If the seeds landed in a stream they might be dispersed by the
current, provided they did not sink, but they are not adapted
for water dispersal
No
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The seeds are smooth with no feathery or fluffy structures
which would be expected for wind dispersal. Also they are too
heavy
No
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Seeds dispersed by mammals have tiny hooks which catch in
the animal’s fur. Sometimes the hooks are on the fruit, and
the seeds fall out as the animal moves about.
Seeds dispersed by birds are usually contained in an edible
fruit.
No
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Question 7
Which of the following statements is the most accurate?
In order to germinate most seeds need…
(c) water, oxygen and a suitable temperature
(b) water, oxygen, nitrates, and a suitable
temperature
(a) water, carbon dioxide, sunlight and a suitable
temperature
(d) water, oxygen and light
Question 8
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Carbon dioxide and sunlight are not needed for germination
but they will be needed when photosynthesis begins in the
seedling.
No
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Nitrates are not needed for germination, but they will be when
the seedling grows and starts to make amino acids and
proteins
No
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Yes
Most seeds need only these three
conditions although some seeds need to
undergo a period of low temperature
before they will germinate.
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It depends
Most seeds do not need light to germinate but a
few do. e.g. some species of lettuce.These seeds
need a light stimulus only in order to get started.
Once germination has begun, light is not needed
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Question 8
The drawing shows a bean
seed germinating. Which of
the structures is the hypocotyl
A
B
CD
D
C
B
A
Question 9
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This is the cotyledon being withdrawn from the testa
No
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Yes
The hypocotyl is the part of the stem below the
cotyledons
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This is the root which has developed from the radicle
No
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This is a lateral root
No
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Question 9
A group of plants derived by vegetative reproduction from a
single parent is called…
(b) a colony
(c) a clone
(d) a community
(a) a population
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A population is made up of all the members of the same
species in a habitat. It does not matter whether they are
derived sexually or asexually.
No
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The plants may well form a colony but this could be
produced from seed as well as vegetatively
No
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Yes
Any population of organisms derived asexually
from a single parent is called a clone. The
organisms will be genetically identical.
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A community consists of all the living organisms occupying
the same habitat
No
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End of questions
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