Related Questions
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4
It is a proteinous layer and the outer covering of endosperm which separates the embryo. Identify the layer.
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4
In which of the following plants, a slender lateral branch arises from the base of the main axis and after growing aerially arch downwards to touch the ground?
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4
Which of the following statement(s) is /are correct?
- Many plants belong to family fabaceae are good ornamentals (Tulip, Gloriosa), source of medicine (Aloe) and vegetables (Asparagus).
- The plumule and radicle are enclosed in sheaths which are called coleorhiza and coleoptile respectively.
- A flower having either only stamens or only carpels is unisexual.
- Basal, alternate, linear, exstipulate with parallel venation types of leaves is found in the family liliaceae.
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4
The flower is the reproductive unit in the ___________ meant for ___________ reproduction.
A. angiosperms and sexual
B. gymnosperms and sexual
D. pteridophytes and asexual
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4
Identify the kind of phyllotaxy shown in the given figures A, B, and C.
A. A-Alternate, B - Opposite, C - Whorled
B. A- Whorled, B - Opposite, C -Alternate
C. A-Alternate, B - Whorled, C - Opposite
D. A-Whorled, B -Alternate, C - Opposite
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4
Seeds are regarded as products of sexual reproduction because they
A. can be stored for long time.
B. are result of fusion of pollen tube.
C. are result of fusion of gametes.
D. give rise to new plants.
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4
Which part of plant is generally green when young and later often become woody and dark brown?
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4
Which of the following option shows the correct labelling of the parts of leaf marked as A, B, C and D.
A. A - Lamina, B - Axillary bud, C - Stipule, D - Leaf base
B. A - Lamina, B - Stipule, C - Axillary bud, D - Leaf base
C. A - Lamina, B - Axillary bud, C - Stipule, D - Pedicel
D. A - Leaflet, B - Axillary bud, C - Stipule, D - Leaf base
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4
Consider the following statements regarding the root system of angiosperms and choose the correct option given below.
- In monocots, the fibrous root system arises from the base of the stem.
- The region of elongation is called the root hair region.
- In sweet potato, the adventitious roots get swollen and store food.
- The stems of maize and sugarcane have supporting roots called prop roots.
A. (i) and (ii) are correct but (iii) and (iv) are wrong.
B. (ii) and (iii) are correct but (i) and (iv) are wrong.
C. (ii) and (iv) are correct but (i) and (iii) are wrong.
D. (i) and (iii) are correct but (ii) and (iv) are wrong.
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4
When a flower has both androecium and gynoecium, it is known as__________.
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4
Which of the following is correct with reference to floral character of family solanaceae?
A. Racemose, zygomorphic, unisexual, floral characters
B. Racemose, zygomorphic, bisexual, polypetalous
C. Axillary, bisexual, actinomorphic, epipetalous
D. Axillary, actinomorphic, bisexual, epipetalous
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4
The region of the stem where leaves are born are called ____________ while ____________ are the portions between two ____________.
A. nodes, nodes and internodes
B. nodes, internodes and nodes
C. internodes, nodes and nodes
D. internodes, internodes and nodes
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4
Read the following statements and answer the questions.
- Gynoecium is situated in the centre and other parts of the flower are located on the rim of the thalamus almost at the same level.
- Ovary is half-inferior.
- Examples are plum, rose and peach.
Which condition of flowers is being described by the above statements ?
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4
The given figure (A, B, and C) shows different types of roots. Identify the root which is seen in wheat plant and originate from the base of the stem?
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4
How many plants in the list given below have marginal placentation?
- Mustard
- Gram
- Tulip
- Asparagus
- Arhar
- Sunhemp
- Chilli
- Colchicine
- Onion
- Moong
- Pea
- Tobacco
- Lupin
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4
The given figure shows the region of root tips with their region marked as A, B and C. Choose the option which shows the correct labelling of A, B and C.
A. A - Zone of elongation, B - Zone of meiosis, C - Zone of mitosis.
B. A - Zone of maturation, B - Zone of meristematic activity, C - Zone of elongation.
C. A - Zone of mitosis, B - Zone of elongation, C - Zone of root cap.
D. A - Region of maturation, B - Region of elongation, C - Zone of meristematic activity.
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4
Which of the following is not the characteristic features of fabaceae?
A. Tap root system, compound leaves and raceme inflorescence.
B. Flowers actinomorphic, twisted aestivation and gamopetalous.
C. Stamens 10, introrse, basifixed, dithecous.
D. Monocarpellary, ovary superior and bent stigma.
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4
Fibrous root system is better adopted than tap root system for
A. transport of organic matter.
B. absorption of water and minerals.
D. anchorage of plant to soil.
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4
Aleurone layer helps in
A. storage of food in endosperm.
C. utilization of stored food.
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4
Cotyledons and testa respectively are edible parts in which of the following group?
C. french bean and coconut
D. groundnut and pomegranate
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4
Main function of leaf is
B. increase the beauty of a tree
D. nerve impulse induction
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4
The given figure shows the parts of mango and coconut. Choose the option which shows the correct labelling of A, B, C and D marked in the figures.
A. A - Epicarp, B - Mesocarp, C - Seed, D - Endocarp
B. A - Epicarp, B - Mesocarp, C - Ovule, D - Endocarp
C. A - Epicarp, B - Mesocarp, C - Ovary, D - Endocarp
D. A - Epicarp, B - Mesocarp, C - Embryo, D - Endocarp
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4
In flower (X), the gynoecium occupies the highest position while the other parts are situated below it. The ovary in such flowers is said to be Y. Identify X and Y and select the correct option.
A. X - Epigynous, Y - Inferior
B. X - Perigynous, Y - Superior
C. X - Hypogynous, Y - Superior
D. X - Perigynous, Y - Half-inferior
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4
Fibrous roots develop in maize from
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4
A sterile stamen is known as
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4
Ginger is an underground stem. It is distinguished from root because
C. it has nodes and internodes.
D. it has xylem and vessels.
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4
Which one of the following characteristics is not related to gynoecium?
A. It is the female reproductive part of the flower.
B. It is composed of stamens.
C. Stigma is usually at the tip of the style and is the receptive surface for pollen grains.
D. Each ovary bears one or more ovules attached to a flattened, cushion like placenta.
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4
Identify the different types of aestivation (A, B, C and D) in corolla and select the correct option.
A. A-Valvate, B-Twisted, C-Imbricate, D-Vexillary
B. A-Vexillary, B-Valvate, C-Twisted, D-Imbricate
C. A-Imbricate, B-Vexillary, C-Valvate, D-Twisted
D. A-Twisted, B-Imbricate, C-Vexillary, D-Valvate
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4
Which one of the following structure is not associated with gynoecium?
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4
Match the following stem modifications given in column I with their examples given in column II and select the correct combination from the options given below.
(Stem Modifications) | (Found in) |
---|
A. Underground stem | I. Euphorbia |
B. Stem tendril | II. Opuntia |
C. Stem thorns | III. Potato |
D. Flattened stem | IV. Citrus |
E. Fleshy cylindrical stem | V. Cucumber |
A. A I, B II, C III, D V, E IV
B. A II, B III, C IV, D V, E I
C. A III, B IV, C V, D I, E II
D. A III, B V, C IV, D II, E I