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
Correct Answer :
A. Mint and jasmine
In mint and jasmine, a slender lateral branch arises from the base of the main axis and after growing aerially for some time arch downwards to touch the ground.
Related Questions
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
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 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
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
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
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
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
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
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
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 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 part of plant is generally green when young and later often become woody and dark brown?
stem
seed
leaves
flower
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 plants is growing in swampy areas, where many roots come out of the ground and grow vertically upwards?
Potato
Opuntia
Rhizophora
Grass
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
The part of the root which is most active in water absorption is called
root cap
maturation zone
meristematic zone
zone of elongation
Leaves of dicotyledonous plants possess _________ venation, while _________ venation is the characteristic of most monocotyledons.
reticulate and parallel
parallel and reticulate
reticulate and perpendicular
obliquely and parallel
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
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.
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
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 scar on the seed coat through which the developing seeds attached to the fruit is called as ________.
testa
tegmen
hilum
micropyle
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
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 represents the floral characters of liliaceae?
Six tepals, zygomorphic, six stamens, bilocular ovary, axile placentation.
Actinomorphic, polyphyllous, unilocular ovary, axile placentation.
Tricorpellary, actinomorphic, polyandrous, superior ovary, axile placentation.
Bisexual, zygomorphic, gamophyllous, inferior ovary, marginal placentation.
Which of the following is an example of pinnately compound leaf ?
Cucumber
Papaya
Cucurbita
Neem
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
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.
Seeds are regarded as products of sexual reproduction because they
can be stored for long time.
are result of fusion of pollen tube.
are result of fusion of gametes.
give rise to new plants.
It is a proteinous layer and the outer covering of endosperm which separates the embryo. Identify the layer.
Tegmen
Scutellum
Hyaline layer
Aleurone layer