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 - Hilum, B - Micropyle, C - Radicle, D - Cotyledon, E - Plumule
A - Hilum, B - Micropyle, C - Plumule, D - Cotyledon, E - Radicle
A - Micropyle, B - Hilum, C - Plumule, D - Cotyledon, E - Radicle
A - Hilum, B - Micropyle, C - Plumule, D - Radicle, E - Cotyledon
Correct Answer :
B. A - Hilum, B - Micropyle, C - Plumule, D - Cotyledon, E - Radicle
In the given figure of dicotyledonous seeds, the structure marked as A, B, C, D and E are respectively hilum, micropyle, plumule, cotyledon and radicle. Hilum is the scar on a seed marking the point of attachment of the developing seed vessel to the fruit. Micropyle is a small opening or pore present just below the hilum. It is the way of entry of water into the seed. Plumule is the developing bud of a plant embryo, situated above the cotyledons and consisting of the epicotyl and immature leaves. Cotyledon is an embryonic leaf in seedbearing plants, one or more of which are the first leaves to appear from a germinating seed. Radicle is the first part of a seedling (a growing plant embryo) to emerge from the seed during the process of germination. The radicle is the embryonic root of the plant, and grows downward in the soil (the shoot emerges from the plumule).
Related Questions
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.
(i) and (iv)
(i), (iii) and (iv)
(iii) and (iv)
(ii) and (iii)
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 - Zone of elongation, B - Zone of meiosis, C - Zone of mitosis.
A - Zone of maturation, B - Zone of meristematic activity, C - Zone of elongation.
A - Zone of mitosis, B - Zone of elongation, C - Zone of root cap.
A - Region of maturation, B - Region of elongation, C - Zone of meristematic activity.
Which type of function is performed by the fleshy leaves of onion and garlic?
Storage
Reproduction
Photosynthesis
Protection
A sterile stamen is known as
staminode
anther
pollen grain
filament
Aleurone layer helps in
storage of food in endosperm.
protection of embryo.
utilization of stored food.
all of the above.
Which of the following is an example of pinnately compound leaf ?
Cucumber
Papaya
Cucurbita
Neem
Fibrous root system is better adopted than tap root system for
transport of organic matter.
absorption of water and minerals.
storage of food.
anchorage of plant to soil.
Floral features are chiefly used in angiosperms identification because
flowers are of various colours.
flowers can be safely pressed.
reproductive parts are more stable and conservative than vegetative parts.
flowers are good materials for identification.
Which of the following statement(s) is/are correct about venation?
(i) The arrangement of veins and the veinlets in the lamina of leaf is called venation.
(ii) Reticulate venation is the characteristic of monocots.
(iii) When the veinlets form a network, the venation is termed as reticulate venation.
(iv) When the veins run parallel to each other, within a lamina, the venation is termed as parallel venation.
Only (i)
Both (i) and (ii)
(i), (iii) and (iv)
All of these
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
region of maturation.
region of elongation.
region of meristematic activity.
root-hairs.
The given figure shows the parts of flowering plant. Which parts of the given figure were involved in the following functions:
- Storing reserve food material
- Synthesis of plant growth regulators.
- Absorption of water and minerals from the soil.
- Providing a proper anchorage to the plant parts
5 and 6
1, 2 and 6
1, 2, 3 and 4
2, 4, 5 and 6
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 - Epicarp, B - Mesocarp, C - Seed, D - Endocarp
A - Epicarp, B - Mesocarp, C - Ovule, D - Endocarp
A - Epicarp, B - Mesocarp, C - Ovary, D - Endocarp
A - Epicarp, B - Mesocarp, C - Embryo, D - Endocarp
Stem tendrils are found in
cucumber
pumpkins
grapevines
all of these
Match column I with column II and choose the correct option.
| Column-I | Column-II |
|---|---|
| A. Bud in the | I. Pitcher plant axil of leaf and venus fly trap |
| B. Outer layer of | II. Cacti seed coat |
| C. Spines | III. Testa (modified leaves) |
| D. Leaves modified | IV. Simple leaf to catch insects |
| E. Fleshy leaves | V. Garlic and onion with stored food |
A I, B II, C III, D IV, E V
A V, B IV, C III, D II, E I
A IV, B III, C II, D I, E V
A IV, B II, C III, D I, E V
Which of the following plants is growing in swampy areas, where many roots come out of the ground and grow vertically upwards?
Potato
Opuntia
Rhizophora
Grass
Match column-I with column-II and choose the correct option.
| A. Gram, sem, moong, | I. Medicine soyabean |
|---|---|
| B. Soyabean,groundnut | II. Ornamental |
| C. Indigofera | III. Fodder |
| D. Sunhemp | IV. Fibres |
| E. Sesbania, Trifolium | V. Dye |
| F. Lupin, sweet potato | VI. Edible oil |
| G. Mulethi | VII. Pulses |
A I, B II, C III, D IV, E V, F VI, G VII
A VII, B VI, C V, D IV, E III, F II, G I
A II, B IV, C VI, D I, E III, F V, G VII
A I, B III, C V, D VII, E II, F IV, G VI
Study the following statements and select the correct option
- Buds are present in axil of leaflets of the compound leaf.
- Pulvinus leaf-base is present in some leguminous plants.
- In Alstonia, the petioles expand, become green and synthesize food.
- Opposite phyllotaxy is seen in guava.
(ii) and (iv) are correct but (i) and (iii) are incorrect.
(i) and (iii) are correct but (ii) and (iv) are incorrect.
(i) and (iv) are correct but (ii) and (iii) are incorrect.
(ii), (iii) and (iv) are correct but (i) is incorrect.
Which of the following statements are correct about the leaf?
- Leaf is a lateral, generally flattened structure borne on the stem.
- It develops at the node and bears a bud in its axil.
- Leaves originate from root apical meristems and arranged in an acropetal order.
- They are the most important vegetative organs for reproduction.
(i) and (ii)
(ii) and (iii)
(i), (ii) and (iv)
all of these
Which of the following is correct with reference to floral character of family solanaceae?
Racemose, zygomorphic, unisexual, floral characters
Racemose, zygomorphic, bisexual, polypetalous
Axillary, bisexual, actinomorphic, epipetalous
Axillary, actinomorphic, bisexual, epipetalous
A scar on the seed coat through which the developing seeds attached to the fruit is called as ________.
testa
tegmen
hilum
micropyle
The given figure shows a typical structure of monocotyledonous seeds. Identify A, B, C, D and E parts marked in the given figures.
A - Endosperm, B - Embryo, C - Scutellum, D - Coleorhiza, E - Coleoptile
A- Embryo, B - Endosperm, C - Scutellum, D - Coleoptile, E - Coleorhiza
A - Endosperm, B - Embryo, C - Scutellum, D - Coleoptile, E - Coleorhiza
A - Embryo, B - Endosperm, C - Scutellum, D - Coleorhiza, E - Coleoptile
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?
A
B
C
Both A and B
Which one of the following statement is not correct?
Each stamen which represents the male reproductive organ consists of a stalk or a filament and an anther.
An actinomorphic flower can be dissected into two equal halves from any plane.
Superior ovary is found in hypogynous flowers.
When stamens are attached to the petals, they are epiphyllous as in brinjal.
Cotyledons and testa respectively are edible parts in which of the following group?
walnut and tamarind
cashew nut and litchi
french bean and coconut
groundnut and pomegranate
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
C, B, E, A, D
A, B, C, D, E
D, E, A, C, B
E, D, C, B, A
Fibrous roots develop in maize from
upper nodes
lower nodes
upper internodes
none of these
The primary roots and its branches constitute the
fibrous root system.
tap root system.
adventitious root system.
all of the above
Statement-1 : Ginger has a prostrate-growing rhizome.
Statement-2 : Shoot growth is not effected by gravity.
Statement-1 and statement-2 are true and Statement-2 is a correct explanation for statement-1.
Statement-1 and statement-2 are true but statement-2 is a correct explanation for statement-1.
Statement-1 is true and statement-2 is false.
Both the statements are false.
Main function of leaf is
exchange of gases
increase the beauty of a tree
manufacturing of food
nerve impulse induction
The mature seeds of plants such as gram and peas, possess no endosperm, because
these plants are not angiosperms.
there is no double fertilization in them.
endosperm is not formed in them.
endosperm gets used up by the developing embryo during seed development.