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.
Correct Answer :
D. anchorage of plant to soil.
Fibrous root system is better adopted than tap root system for anchorage of plants to soil. In fibrous root system, the roots originate from the base of the stem. E.g, wheat plant. Tap root system is the primary root which is short lived and is replaced by a large number of roots (called fibrous root).
Related Questions
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 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 region of the stem where leaves are born are called ____________ while ____________ are the portions between two ____________.
nodes, nodes and internodes
nodes, internodes and nodes
internodes, nodes and nodes
internodes, internodes and nodes
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
It is a proteinous layer and the outer covering of endosperm which separates the embryo. Identify the layer.
Tegmen
Scutellum
Hyaline layer
Aleurone layer
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.
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
Fibrous roots develop in maize from
upper nodes
lower nodes
upper internodes
none of these
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
How many plants in the list given below have marginal placentation?
- Mustard
- Gram
- Tulip
- Asparagus
- Arhar
- Sunhemp
- Chilli
- Colchicine
- Onion
- Moong
- Pea
- Tobacco
- Lupin
Four
Five
Six
Three
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
X is the outermost whorl of the flower and contains Y. Y is green, leaf like and protect the other whorls of the flower. Identify X and Y.
X - Calyx; Y - Sepals
X - Corolla; Y - Petals
X - Gynoecium; Y - Fruit
X - Androecium; Y - Ovary
The main purpose of phyllotaxy for the leaves is to provide sufficient_______.
soil
air
water
light
Which of the following groups of plants have underground stems?
Potato, ginger, turmeric, Euphorbia, zaminkand
Potato, ginger, turmeric, zaminkand, Colocasia
Potato, Citrus, Opuntia, zaminkand, Colocasia
Potato, cucumber, watermelon, zaminkand, Colocasia
Which one of the following option shows the correct labelling of the structure marked as A, B, C & D?
A - Gynoecium, B - Megasporophyll, C - Ovule, D - Thalamus
A - Gynoecium, B - Stamen, C - Seed, D - Thalamus
A - Microsporophyll, B - Stamen, C - Ovule, D - Thalamus
A - Gynoecium, B - Stamen, C - Ovule, D - Thalamus
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.
Identify the kind of phyllotaxy shown in the given figures A, B, and C.
A-Alternate, B - Opposite, C - Whorled
A- Whorled, B - Opposite, C -Alternate
A-Alternate, B - Whorled, C - Opposite
A-Whorled, B -Alternate, C - Opposite
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 statement(s) is/are correct about calyx?
Calyx is the outermost whorl of the flower and are called sepals.
Sepals are green, leaf like and protect the flower in the bud stage.
The calyx may be gamosepalous (sepals free) or polysepalous (sepals united).
Both (a) and (b)
Prop roots of banyan tree are meant for
respiration.
absorption of water from soil.
providing support to big tree.
all of the above.
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
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 & B) show two types of compound leaves. Choose the option which identity the correct compound leaf and their example (c).
A - Pinnately compound leaf, C - Neem
A - Palmately compound leaf, C - Neem
B- Pinnately compound leaf, C - Silk cotton
B- Palmately compound leaf, C - Silk cotton
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.
Match column-I with column-II and choose the option which shows their correct combination.
| Column-I | Column-II |
|---|---|
| A. Gamosepalous | I. Flower of lily |
| B. Polysepalous | II. Sterile anther |
| C. Gamopetalous | III. Free petals |
| D. Polypetalous | IV. Free sepals |
| E. Epiphyllous | V. Fused petals |
| F. Staminode | VI. Fused sepals |
A IV, B V, C III, D I, E VI, F II
A IV, B III, C V, D I, E II, F VI
A VI, B IV, C III, D V, E I, F II
A VI, B IV, C V, D III, E II, F I
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 primary roots and its branches constitute the
fibrous root system.
tap root system.
adventitious root system.
all of the above
Aleurone layer helps in
storage of food in endosperm.
protection of embryo.
utilization of stored food.
all of the above.
Which of the following statements is correct?
Imbricate aestivation is found in papilionaceous family.
Generally sepals are green, leaf like and protect the flowers in the bud stage.
In cymose type of inflorescence, the main axis terminates in a flower, hence is limitless in growth.
In axile placentation ovary is one chambered but it becomes two cambered due to formation of the false septum.
Identify the inflorescence shown by the given figures A and B.
A-Cymose, B-Racemose
A-Racemose, B-Cymose
A-Racemose, B-Racemose
A-Cymose, B-Cymose