Morphology of Flowering Plants Test 53

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Morphology of Flowering Plants Test 53

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Weekly Quiz Competition

Question 1
1 / -0

Which inflorescence is present in Coriander?

A
Compound umbel

B
Catkin

C
Spadix

D
Capitulum
Question 2
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Which one of the following statement is correct?

A
Tomato fruit is a capsule

B
Seeds of orchids have oil-rich endosperm

C
Placentation in Primrose is basel

D
Flower of tulip is a modified shoot
Solution
Correct Option: D
Explanation:
Underground stems in some plants are modified into a bulb to store food. The flower tulip is also modified to form the shoot.
Tomato is a berry fruit and hence, is not a capsule.
There is no endospern formation in the seeds of orchids.
Primrose has a free central placentaion.
Hence, flower of tulip is a modified shoot.
Question 3
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Inflorescence with trimerous flowers developed basipetally is also characterized by the?

A
Presence of glume and lemma

B
Presence of achlamydeous flowers

C
Presence of cup shaped involucre and sexual whorls

D
Presence of fleshy receptible forming a hollow cavity
Question 4
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In monocot leaf

A
Bulliform cells are absent from the epidermis

B
Veins form a network

C
Mesophyll is well differentiated into these parts

D
Mesophyll is not differentiated into palisade and spongy parenchyma

Solution

leaf is a green outgrowth of a stem. It performs photosynthesis and provides food to the rest of the plant body. There are different types of leaves found due to climate, water availability, etc. A leaf consists of lamina and petiole, leaves can be monocot or dicot. It contains stomate which helps in gaseous exchange.

(D) Mesophyll is not differentiated into palisade and spongy parenchyma where as it is present in dicot leaves.
Question 5
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Identify the diagram A and B.

A
A$$=$$ Palmate compound leaf

B$$=$$ Whorled phyllotaxy

B
A$$=$$ Pinnate compound leaf

B$$=$$ Whorled phyllotaxy

C
A$$=$$ Whorled phyllotaxy

B$$=$$ Palmate compound leaf

D
None of these
Solution
Correct option: A

Explanation:
- In diagram A, each leaflet of the blade being separated along a main or secondary vein and the leaflets radiating from the end of the petiole, like fingers of the palm of a hand. This type arrangement is seen in palmate compound leaf.
- In diagram B, three or more leaves are present at one node. This type of arrangement of leaves is called Whorled phyllotaxy.
  Thus, Option A is correct.
Question 6
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Which of the following statements support(s) the fact that the upper surface of a leaf is usually greener than the lower surface?

A
More chlorophyll is present on the upper surface to absorb more light

B
There are more stomata present on the upper surface than the lower surface

C
More sugar is formed on the lower surface

D
The green leaves look greener under the hot Sun
Question 7
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Match the following
Column-I Column-II
(i) Tap root (a) Sweet potato
(ii) Adventitious root (b) Turnip
(iii) Stem (c) Wheat
(iv) Fibrous root (d) Potato

A
(i) - a, (ii) - b, (iii) - c, (iv) d

B
(i) - b, (ii) - c, (iii) - a, (iv) - d

C
(i) - b, (ii) - a, (iii) - d, (iv) c

D
(i) - d, (ii) - c, (iii) - b, (iv) - a
Solution
- (i)Taproot - (b)Turnip
A taproot is a large, central, and dominant root from which other roots sprout laterally. Typically a taproot is somewhat straight and very thick, is tapering in shape, and grows directly downwards. For example, Turnip, beetroot, carrot, etc.
- (ii)Adventitious root - (a)Sweet potato
The roots arise from parts of the plant other than the radicle and are called adventitious roots. For example, sweet potato.
- (iii)Stem - (d)Potato
Stem tuber is a swollen tip of an underground lateral Stem (Stolon). It is covered by a corry Skin with a number of small depressions called eyes’. Each eye represents a node, bearing one or more buds subtended by a leaf scar (= scale leaf). A big scar at one end (heel end) of a potato marks its attachment to the stolen. Adventitious roots are usually absent. For example, Potato.
- (iv)Fibrous root - (c)Wheat
A fibrous root system is the opposite of a taproot system. It is usually formed by thin, moderately branching roots growing from the stem. For example, Grass, wheat, rice, marigold, white clover, maize, banana, millet, bamboo, and onion.
- So, the correct answer is 'b'(i) - b, (ii) - a, (iii) - d, (iv) c''.
Question 8
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The ovaries of different flowers may contain

A
Only one ovule

B
Many ovules

C
One to many ovules

D
Only two ovules

Solution

In an ovary, the numbers of ovules are not equal for every flower. There can be a single or many ovules present in flower.
Thus, the correct answer is option (c).
Question 9
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Which of the following represent zygomorphic symmetry?

A
Canna, Mustard, Chilly, Datura

B
Mustard, Canna, Pea, Datura

C
Pea, Bean, Cassia, Gulmohar

D
Pea, Bean, Canna, Chilly
Solution
- Zygomorphic symmetry, also known as bilateral symmetry occurs in a flower through which it can pass only one plane of symmetry that will divide it into two parts.
- The Fabaceae or Leguminosae, commonly known as the legume, pea, or bean family are a large and economically important family of flowering plants which has a zygomorphic flower.
- Pea, bean, Cassia and Gulmohar belong to Fabaceae.
So, the correct answer is 'Pea, bean, Cassia, Gulmohar'.
Question 10
1 / -0

Flowering in short day plants is stimulated by

A
Short Nights

B
Long day with interrupted night

C
Short day with uninterrupted long Nights

D
Short day with interrupted long Nights

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	Column-I		Column-II
(i)	Tap root	(a)	Sweet potato
(ii)	Adventitious root	(b)	Turnip
(iii)	Stem	(c)	Wheat
(iv)	Fibrous root	(d)	Potato

Morphology of Flowering Plants Test 53

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Morphology of Flowering Plants Test 53

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Question 1

Compound umbel

Catkin

Spadix

Capitulum

Question 2

Tomato fruit is a capsule

Seeds of orchids have oil-rich endosperm

Placentation in Primrose is basel

Flower of tulip is a modified shoot

Solution

Question 3

Presence of glume and lemma

Presence of achlamydeous flowers

Presence of cup shaped involucre and sexual whorls

Presence of fleshy receptible forming a hollow cavity

Question 4

Bulliform cells are absent from the epidermis

Veins form a network

Mesophyll is well differentiated into these parts

Mesophyll is not differentiated into palisade and spongy parenchyma

Solution

Question 5

A$$=$$ Palmate compound leafB$$=$$ Whorled phyllotaxy

A$$=$$ Pinnate compound leafB$$=$$ Whorled phyllotaxy

A$$=$$ Whorled phyllotaxyB$$=$$ Palmate compound leaf

None of these

Solution

Question 6

More chlorophyll is present on the upper surface to absorb more light

There are more stomata present on the upper surface than the lower surface

More sugar is formed on the lower surface

The green leaves look greener under the hot Sun

Question 7

(i) - a, (ii) - b, (iii) - c, (iv) d

(i) - b, (ii) - c, (iii) - a, (iv) - d

(i) - b, (ii) - a, (iii) - d, (iv) c

(i) - d, (ii) - c, (iii) - b, (iv) - a

Solution

Question 8

Only one ovule

Many ovules

One to many ovules

Only two ovules

Solution

Question 9

Canna, Mustard, Chilly, Datura

Mustard, Canna, Pea, Datura

Pea, Bean, Cassia, Gulmohar

Pea, Bean, Canna, Chilly

Solution

Question 10

Short Nights

Long day with interrupted night

Short day with uninterrupted long Nights

Short day with interrupted long Nights

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A$$=$$ Palmate compound leaf

B$$=$$ Whorled phyllotaxy

A$$=$$ Pinnate compound leaf

B$$=$$ Whorled phyllotaxy

A$$=$$ Whorled phyllotaxy

B$$=$$ Palmate compound leaf