Related Questions
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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
Which one of the following characteristics does not belong to parietal placentation?
A. Ovules are borne on central axis.
B. Ovary is one-chambered but it becomes two-chambered due to the formation of false septum.
C. Examples are mustard and Argemone.
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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
The region of the root-tip whose cells undergo rapid elongation and enlargement and are responsible for the growth of the root in length is called the
C. region of meristematic activity.
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4
A branch in which each node bearing a rossette of leaves and a tuft of roots is found in aquatic plants like _________ and _________.
B. Eichhornia and Hydrilla
D. Pistia and Vallisneria
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4
Fibrous root system is found in
A. monocotyledonous plants.
B. dicotyledonous plants.
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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
Which of the following is a modified stem for the protection of plants from browsing animals?
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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
The region of the root-tip which is involved in the formation of root hairs by epidermal cells is called the
B. region of meristematic activity.
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4
A - Which one of the option shows the correct labelling of the parts marked as A, B, C and D in a typical structure of dicotyledonous seeds ?
A. A - Hilum, B - Micropyle, C - Radicle, D - Cotyledon, E - Plumule
B. A - Hilum, B - Micropyle, C - Plumule, D - Cotyledon, E - Radicle
C. A - Micropyle, B - Hilum, C - Plumule, D - Cotyledon, E - Radicle
D. A - Hilum, B - Micropyle, C - Plumule, D - Radicle, E - Cotyledon
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4
Prop roots of banyan tree are meant for
B. absorption of water from soil.
C. providing support to big tree.
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4
Which of the following statements are correct?
- From the region of elongation, some of the epidermal cells form root hairs.
- Pneumatophores are seen in Rhizophora.
- Adventitious roots are seen in the banyan tree.
- Maize and sugarcane have prop roots.
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4
Identify the inflorescence shown by the given figures A and B.
C. A-Racemose, B-Racemose
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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
Which of the following statement(s) is/are correct about the fruit?
- Fruit is a mature or ripened ovary, developed before fertilization.
- It consists of a wall or pericarp and seeds.
- When pericarp is thick and fleshy, it is differentiated into outer mesocarp, middle epicarp and the inner endocarp.
- In mango and coconut, the fruit is known as a berry.
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4
Which one of the following statement is correct?
A. Bulb of Allium cepa is a modified stem.
B. Cloves of Allium sativum are fleshy scale leaves.
C. Corm of Colocasia is a modified root.
D. Tendril in Vitis vinifera is a modified axillary bud.
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4
Statement-1 : Ginger has a prostrate-growing rhizome.
Statement-2 : Shoot growth is not effected by gravity.
A. Statement-1 and statement-2 are true and Statement-2 is a correct explanation for statement-1.
B. Statement-1 and statement-2 are true but statement-2 is a correct explanation for statement-1.
C. Statement-1 is true and statement-2 is false.
D. Both the statements are false.
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4
Leaves of dicotyledonous plants possess _________ venation, while _________ venation is the characteristic of most monocotyledons.
A. reticulate and parallel
B. parallel and reticulate
C. reticulate and perpendicular
D. obliquely and parallel
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4
Rearrange the following zones seen in the regions of root tip and choose the correct option.
(A) Root hair zone
(B) Zone of meristems
(C) Root cap zone
(D) Zone of maturation
(E) Zone of elongation
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4
Which of the following is an example of pinnately compound leaf ?
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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
The character of flower which is represented by floral formula but not by floral diagram is
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4
Floral features are chiefly used in angiosperms identification because
A. flowers are of various colours.
B. flowers can be safely pressed.
C. reproductive parts are more stable and conservative than vegetative parts.
D. flowers are good materials for identification.
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4
Which of the following is the green expanded part of leaf with vein and veinlets?
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4
Roots develop from parts of the plant other than radicle are called
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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
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
Which part of plant is generally green when young and later often become woody and dark brown?
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4
Stilt roots occur in __________ .