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
Correct Answer :
A. A - V, t; B - II, s; C -I, r; D -III, q; E -IV, p
The figures show the types of placentation. Placentation is the arrangement of the placenta or placentae in the ovary of a flower. The function of placentation is to transfer nutrients from maternal tissue to a growing embryo. A: Marginal placentation is found in monocarpellary ovary. In this ovary is unilocular and ovules arranged along margin of unilocular ovary. Examples - pea, Clitoria, groundnut. B: Axile placentation is found in bi- or multicarpellary and multilocular ovary. Ovules are arranged along the central axis of placenta and the number of chambers corresponds to the number of carpels. Examples - lemon, tomato, Hibiscus, cotton. C: Parietal placentation is found in bi- or multicarpellary ovary but unilocular. Ovules are arranged along periphery or the inner wall of the ovary and number of placentae corresponds to the number of carpels. Examples - Cucurbita, Argemone. D: Free central placentation is found in multicarpellary, syncarpous ovary. Ovules are borne along the central axis which is not connected with the ovary wall by septum. Example - Dianthus roam Primrose. E: Basal placentation is found in monocarpellary but unilocular. In this placentation, the placenta develops at the base of the ovary and a single ovule is attached to it. Examples - sunflower, marigold.
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
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
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
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
Which of the following part elongates directly and leads to the formation of primary roots?
bud
radicle
plumule
root hair
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
Statement 1 : A simple leaf has undivided lamina.
Statement 2 : Leaves showing pinnate and palmate venations have various type of incisions.
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 not a correct explanation for statement-1.
Statement-1 is true and statement-2 is false.
Both the statements are false.
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.
Aleurone layer helps in
storage of food in endosperm.
protection of embryo.
utilization of stored food.
all of the above.
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.
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.
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 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)
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)
In flower (X), the gynoecium occupies the highest position while the other parts are situated below it. The ovary in such flowers is said to be Y. Identify X and Y and select the correct option.
X - Epigynous, Y - Inferior
X - Perigynous, Y - Superior
X - Hypogynous, Y - Superior
X - Perigynous, Y - Half-inferior
The main purpose of phyllotaxy for the leaves is to provide sufficient_______.
soil
air
water
light
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
Read the following statements and answer the question.
- It is the pattern of arrangement of leaves on the stem or branch.
- It is usually of three types - alternate, opposite and whorled.
- It is meant for getting maximum amount of light. statements?
Phyllotaxy
Venation
Inflorescencew
Aestivation
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
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
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
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
Pollen grains are produced within _________of stamen.
ovary
anther
filament
connective
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
Roots develop from parts of the plant other than radicle are called
tap roots
fibrous roots
adventitious roots
nodular roots
Most prominent function of inflorescence is
dispersal of seeds.
formation of more fruits.
formation of pollen grains.
dispersal of pollens.
Which of the following option shows the correct labelling of the parts of leaf marked as A, B, C and D.
A - Lamina, B - Axillary bud, C - Stipule, D - Leaf base
A - Lamina, B - Stipule, C - Axillary bud, D - Leaf base
A - Lamina, B - Axillary bud, C - Stipule, D - Pedicel
A - Leaflet, B - Axillary bud, C - Stipule, D - Leaf base
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
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.
Alternate type of phyllotaxy is found in
china rose
mustard
sunflower
all of these