The root differs from stem in having
nodes and internodes
axillary buds
multicellular hairs
unicellular hairs
Correct Answer :
D. unicellular hairs
A root differs from stem, without any exception, by the presence of unicellular root hairs and in the absence of nodes and internodes.
Related Questions
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
A branch in which each node bearing a rossette of leaves and a tuft of roots is found in aquatic plants like _________ and _________.
Hydrilla and Pistia
Eichhornia and Hydrilla
Pistia and Eichhornia
Pistia and Vallisneria
Match the column I with column II and choose the option which shows their correct match.
| Column I | Column II |
|---|---|
| A. Placentation | (i) Arrangement of flowers on the rachis |
| B. Aestivation | (ii) Modified shoot for sexual reproduction |
| C. Inflorescence | (iii) Arrangement of various whorls in the bud |
| D. Flower | (iv) Arrangement of ovules within an ovary |
A - (i), B - (ii), C - (iii), D - (iv)
A - (iii), B - (i), C - (ii), D - (iv)
A - (iii), B - (i), C - (iv), D - (ii)
A - (iv), B - (iii), C - (i), D - (ii)
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.
The part of the root which is most active in water absorption is called
root cap
maturation zone
meristematic zone
zone of elongation
The given figures (A and B) shows the modificaiton of roots.Which of the following statements regarding the figures is correct ?
Tap roots of carrot, turnip and adventitious root of sweet potato, get swollen and store food.
Pneumatophores conducts water, minerals & photosynthesis
Pneumatophore is found in the plants that grow in sandy soil.
Turnip & carrot shows adventitious roots and sweet potato shows tap root.
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
Identify the different types of aestivation (A, B, C and D) in corolla and select the correct option.
A-Valvate, B-Twisted, C-Imbricate, D-Vexillary
A-Vexillary, B-Valvate, C-Twisted, D-Imbricate
A-Imbricate, B-Vexillary, C-Valvate, D-Twisted
A-Twisted, B-Imbricate, C-Vexillary, D-Valvate
Prop roots of banyan tree are meant for
respiration.
absorption of water from soil.
providing support to big tree.
all of the above.
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?
Mint and jasmine
Banana and pineapple
Grass and stawberry
Pistia and Eichhornia
Which one of the following structure is not associated with gynoecium?
Ovary
Style
Stigma
Filament
Stem tendrils are found in
cucumber
pumpkins
grapevines
all of these
During the post-fertilization period, the ovules develops into ___A____ and the ovary matures into a ___B ____.
A - seeds; B - fruit
A - fruit; B - seeds
A - flower; B - seed
A - seeds; B - flower
Identify the correct families of the given plant species (A, B and C)
A - Liliaceae, B - Compositae, C - Malvaceae
A - Fabaceae, B - Solanaceae, C - Liliaceae
A - Compositae, B - Malvaceae, C - Liliaceae
A - Solanaceae, B - Fabaceae, C - Liliaceae
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
When a flower has both androecium and gynoecium, it is known as__________.
asexual
bisexual
unisexual
multisexual
Which one of the following characteristics is not related to gynoecium?
It is the female reproductive part of the flower.
It is composed of stamens.
Stigma is usually at the tip of the style and is the receptive surface for pollen grains.
Each ovary bears one or more ovules attached to a flattened, cushion like placenta.
Roots develop from parts of the plant other than radicle are called
tap roots
fibrous roots
adventitious roots
nodular roots
The flower is the reproductive unit in the ___________ meant for ___________ reproduction.
angiosperms and sexual
gymnosperms and sexual
algae and asexual
pteridophytes and asexual
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 - 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
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.
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.
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 ?
hypogyny
perigyny
epigyny
none of these
Pneumatophores are found in
the vegetation which is found in marshy and saline lake.
the vegetation which found in saline soil.
xerophytic condition.
hydrophytic condition.
Match the following placentation types given in column I with their examples given in column II and choose the correct combination from the options given below.
| (Placentation Types) | (Examples) |
|---|---|
| A. Basal | I. Dianthus |
| B. Free central | II. Pea |
| C. Parietal | III. Lemon |
| D. Axile | IV. Marigold |
| E. Marginal | V. Argemone |
A I, B II, C III, D IV, E V
A II, B III, C IV, D V, E I
A IV, B I, C V, D III, E II
A IV, B III, C V, D I, E II
Most prominent function of inflorescence is
dispersal of seeds.
formation of more fruits.
formation of pollen grains.
dispersal of pollens.
The primary roots and its branches constitute the
fibrous root system.
tap root system.
adventitious root system.
all of the above
When a flower can be divided into two equal radial halves in any radial plane passing through the centre, it is known as
actinomorphic
zygomorphic
asymmetric
bisymmetric
Which of the following statement (s) is/are not correct?
- Calyx and corolla are reproductive organs of a flower.
- Zygomorphic flower can be divided into two equal radial halves in any radial plane.
- Flowers without bracts are termed as bracteate.
- Parthenocarpic fruit is formed after fertilization of the ovary.
- In legumes, seed is non-endospermic.
- Radical buds develop on roots.
(i) , (ii), (iii) and (iv)
(i), (ii) and (v)
(iii), (iv) and (vi)
(iv), (v) and (i)