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
Correct Answer :
B. A II; B I; C IV; D III
Valvate, twisted, imbricate and vexillary are types of aestivation. A: Valvate aestivation - In this sepals or petals or tepals just touch one another without any overlapping, e.g. Calotropis. B: Twisted aestivation - In this one margin of each petal overlaps the margin of an adjacent petal and the other margin being overlapped by margin of another adjacent petal, e.g. China rose, cotton. C: Imbricate aestivation: If the margin of sepals or petals overlap one another but not in any particular direction as in Cassia and Gulmohar, the aestivation is called imbricate. D: Vexillary aestivation - It is the characteristics aestivation of corolla of pea when posterior petal is outermost. E.g, bean.
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 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
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
Which one of the following structure is not associated with gynoecium?
Ovary
Style
Stigma
Filament
When a flower has both androecium and gynoecium, it is known as__________.
asexual
bisexual
unisexual
multisexual
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 (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
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
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
Which one of the following statement is correct?
Bulb of Allium cepa is a modified stem.
Cloves of Allium sativum are fleshy scale leaves.
Corm of Colocasia is a modified root.
Tendril in Vitis vinifera is a modified axillary bud.
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.
Which of the following is the green expanded part of leaf with vein and veinlets?
Petiole
Node
Stipule
Lamina
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
The main function(s) of root system is/are
absorption of water and minerals from the soil
storing reserve food material
synthesis of plant growth regulators
All of the above
The part of the root which is most active in water absorption is called
root cap
maturation zone
meristematic zone
zone of elongation
The flower is the reproductive unit in the ___________ meant for ___________ reproduction.
angiosperms and sexual
gymnosperms and sexual
algae and asexual
pteridophytes and asexual
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 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 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
A sterile stamen is known as
staminode
anther
pollen grain
filament
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
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)
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
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
Roots develop from parts of the plant other than radicle are called
tap roots
fibrous roots
adventitious roots
nodular roots
Given figures (A, B and C) shows the position of floral parts on thalamus. (given as I, II and III) Select the correct combination.
- Hypogynous flower
- Perigynous flower
- Epigynous flower
A-I, B-II, C-III
A-I, B-III, C-II
A-III, B-II, C-I
A-III, B-I, C-II
Root hairs develop from
region of maturation
region of elongation
region of meristematic activity
root cap
The main purpose of phyllotaxy for the leaves is to provide sufficient_______.
soil
air
water
light
Alternate type of phyllotaxy is found in
china rose
mustard
sunflower
all of these