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
Correct Answer :
B. B
Figure A, B and C are respectively tap root, fibrous root and adventitious root. The root branches of the primary root are called as Taproot system. The monocotyledons will have the primary root as short-lived and has many numbers of small lateral roots. These roots develop at the stem base and they form a root system called as fibrous root system, which is observed in the wheat plant (monocot). In some plants like banyan tree, monstera, and grass, parts of the plant other than radicle will be responsible for the development of root system called as adventitious root system.
Related Questions
Which of the following is a modified stem for the protection of plants from browsing animals?
Tendrils
Thorns
Rhizome
Tuber
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.
(i) and (ii) are correct but (iii) and (iv) are wrong.
(ii) and (iii) are correct but (i) and (iv) are wrong.
(ii) and (iv) are correct but (i) and (iii) are wrong.
(i) and (iii) are correct but (ii) and (iv) are wrong.
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.
Only (i)
Both (ii) and (iii)
Only (ii)
All of these
Stilt roots occur in __________ .
groundnut
rice
sugarcane
wheat
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 I, B II, C III, D V, E IV
A II, B III, C IV, D V, E I
A III, B IV, C V, D I, E II
A III, B V, C IV, D II, E I
Alternate type of phyllotaxy is found in
china rose
mustard
sunflower
all of these
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)
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
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 plants is growing in swampy areas, where many roots come out of the ground and grow vertically upwards?
Potato
Opuntia
Rhizophora
Grass
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
Ginger is an underground stem. It is distinguished from root because
it lacks chlorophyll.
it stores food.
it has nodes and internodes.
it has xylem and vessels.
Which is not a stem modification ?
Rhizome of ginger
Corm of Colocasia
Pitcher of Nepenthes
Tuber of potato
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 is the green expanded part of leaf with vein and veinlets?
Petiole
Node
Stipule
Lamina
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
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.
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 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
It is a proteinous layer and the outer covering of endosperm which separates the embryo. Identify the layer.
Tegmen
Scutellum
Hyaline layer
Aleurone layer
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
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
A sterile stamen is known as
staminode
anther
pollen grain
filament
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
The X is small and situated in a groove at one end of the endosperm. It consists of one large and shield shaped cotyledon known as Y and a short axis with a plumule and a Z. Identify X, Y and Z.
X - Scutellum, Y - Embryo, Z - Radicle
X - Embryo, Y - Scutellum, Z - Radicle
X - Scutellum, Y - Radicle, Z - Embryo
X - Radicle, Y - Embryo, Z - Scutellum
Match column - I, II and III and choose the correct option.
A - V, t; B - II, s; C -I, r; D -III, q; E -IV, p
A - I, t; B - II, s; C - III, r; D - IV, p; E - V, q
A - V, p; B - II, s; C - I, q; D - III, r; E - IV, t
A - V, p; B - III, q; C - II, s; D - I, t; E - IV, r
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
The part of the root which is most active in water absorption is called
root cap
maturation zone
meristematic zone
zone of elongation
Match the column-I containing types of aestivation with their examples given in column-II and choose the correct option.
| Column - I | Column-II |
|---|---|
| (Type of aestivation) | (Examples) |
| A. Valvate | I. Cotton |
| B. Twisted | II. Calotropis |
| C. Imbricate | III. Bean |
| D. Vexillary | IV. Gulmohar |
A I; B II; C IV; D III
A II; B I; C IV; D III
A II; B IV; C I; D III
A II; B I; C III; D IV
Which of the following is an example of pinnately compound leaf ?
Cucumber
Papaya
Cucurbita
Neem