Morphology in Flowering Plants - Live Session - 08 July 2020Contact Number: 9667591930 / 8527521718Morphology in Flowering Plants - Live Session - 08 July 2020Contact Number: 9667591930 / 8527521718In cymose type of inflorescence:
(1) Main axis continues to grow and the flowers are borne in acropetal succession.
(2) Main axis continues to grow and the flowers are borne in basipetal succession.
(3) Growth is limited and the flowers are borne in basipetal succession.
(4) Growth is limited and the flowers are borne in acropetal succession.
Ovary is one-chambered but it becomes two chambered due to the formation of a false septum in:
(1) Dianthus and Primrose
(2) Mustard and Argemone
(3) Sunflower and Marigold
(4) Pea and Lemon
Which of the following is not a floral character of the family Fabaceae?
1. Calyx - Sepals five, gamosepalous; imbricate aestivation
2. Corolla - Petals five, polypetalous; vexillary aestivation
3. Andreoecium - Ten, diadelphous, anther dithecous
4. Gynoecium - Ovary inferior, bicarpellary, unilocular with many ovules
In marginal placentation, the placenta forms a ridge along the:
1. Ventral suture of the ovary
2. Dorsal suture of the ovary
3. Anterior suture of the ovary
4. Posterior suture of the ovary
A lateral branch with short internodes and each node bearing a rosette of leaves and a tuft of roots is found in:
1. Chrysanthemum
2. Pistia
3. Jasmine
4. Pineapple
Zygomorphic flower is not found in:
1. Cassia
2. Canna
3. Gulmohur
4. Bean
The following diagram can represent the position of the ovary in:
1. Brinjal
2. Guava
3. Rose
4. Mustard
Stem tendrils are not seen in:
1. Grapevine
2. Watermelon
3. Citrus
4. Cucumber
When a shoot tip transforms into a flower,
1. It is always solitary
2. The flower is always short-lived
3. It is never solitary
4. The flower is always long-lived
Match aerial modifications of stem given in column I with their descriptions in column II and choose your answer from the codes given below:
|
A |
Phylloclade |
P |
Green, flattened or cylindrical branches of unlimited growth |
|
B |
Cladode |
Q |
Branches of limited growth that become green and flat like a leaf |
|
C |
Bulbil |
R |
Modified vegetative bud with stored food meant for reproduction |
Codes:
|
|
A |
B |
C |
|
1. |
P |
Q |
R |
|
2. |
P |
R |
Q |
|
3. |
R |
P |
Q |
|
4 . |
Q |
R |
P |
In Australian Acacia, the petiole or any part of rachis becomes flattened taking the shape of a leaf and turning green in color. This structure is called as:
(1) Phylloclade
(2) Cladode
(3) Phyllode
(4) bulbil
China rose is not characterized by:
(1) Axile placentation
(2) Valvate aestivation
(3) Monoadelphous stamen
(4) Superior ovary
The given floral formula describes:
Br ⊕ 
1. Asparagus
2. Belladonna
3. Indigofera
4. Mustard
In vexillary aestivation:
1. The standard overlaps the wings
2. The standard overlaps the keel
3. The standard is overlapped by keel
4. The keel overlap the wings
Identify the correct statement regarding the stem morphology from the following:
| I: | Stems bear only axillary buds. |
| II: | Axillary buds may get modified into thorns as in Citrus |
| III: | Stem tendrils develop from axillary buds as in gourds. |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
The type of placentation show in the given figure is seen in:
| 1. | Dianthus | 2. | Argemone |
| 3. | China rose | 4. | Marigold |
The given floral diagram can be of:
1. Asparagus
2. Atropa belladonna
3. Mustard
4. Indigofera
Plants, which produce characteristic pneumatophores and show vivipary belong to
(1) mesophytes
(2) halophytes
(3) psammophytes
(4) hydrophytes
In Bougainvillea, thorns are the modifications of
(1) stipules
(2) adventitious root
(3) stem
(4) leaf
How many plants among Indigofera, Sesbania, Salvia, Allium, Aloe, mustard, groundnut, raddish, gram and turnip have stamens with different lengths in their flowers?
(1) Three
(2) Four
(3) Five
(4) Six
Tricarpellary, syncarpous and gynoecium is found in flowers of
1. Solanaceae
2. Fabaceae
3. Poaceae
4. Liliaceae
Which of the following is not a stem modification?
1. Thorns of citrus
2. Tendrils of cucumber
3. Flattened structures of Opunita
4. Pitcher of Nepenthes
Roots play insignificant role in absorption of water in
1. sunflower
2. Pistia
3. pea
4. wheat
Among China rose, mustard, brinjal, potato, guava, cucumber, onion and tulip, how many
plants have superior ovary?
1. Five
2. Six
3. Three
4. Four
The hilum is a scar on the
1. seed, where funicle was attached
2. fruit, where it was attached to the pedicel
3. fruit, where style was present
4. seed, where micropyle was present
When the margins of sepals or petals overlap one another without any particular direction, the condition is termed as
(1) vexillary
(2) imbricate
(3) twisted
(4) valvate
Which one of the following statements is correct?
1. The seed in grasses is not endospermic
2. Mango is a parthenocarpic fruit
3. A proteinaceous aleurone layer is present in maize grain
4. A sterile pistil is called a staminode
An aggregate fruit is one which develops from
(1) multicarpellary syncarpous gynoecium
(2) multicarpellary apocarpus gynoecium
(3) complete inflorescence
(4) multicarpellary superior ovary
Among bitter gourd, mustard, brinjal, pumpkin, China rose, lupin, cucumber, sunnhemp, gram, guava, bean, chili, plum, Petunia, tomato, rose, Withania, potato, onion, aloe and tulip, how many plants have hypogynous flower?
(1) Six
(2) Ten
(3) Fifteen
(4) Eighteen
The gynoecium consists of many free pistils in flowers of
(1) Aloe
(2) tomato
(3) Papaver
(4) Michelia
How many plants in the list given below have composite fruits that develop from an inflorescence?
Walnut, poppy, radish, fig, pineapple, apple, tomato, mulberry
(1) Four
(2) Five
(3) Two
(4) Three
Which one of the following statements is correct?
(1) Seeds of orchids have oil-rich endosperm
(2) Placentation in primrose is basal
(3) Flower of tulip is a modified shoot
(4) In tomato, fruit is a capsule
In a unilocular ovary with a single ovule, the placentation is
1. marginal
2. basal
3. free central
4. axile
The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons?
1. Cotyledon
2. Endosperm
3. Aleurone layer
4. Plumule
Replum is present in the ovary of flower of
(1) lemon
(2) mustard
(3) sunflower
(4) pea
In which of the following fruits is the edible part the aril?
(1) Custard apple
(2) pomegranate
(3) Orange
(4) Litchi
The examples (s) of modified leaves are
1. tendrils of pea
2. spines of cacti
3. pitcher of the pitcher plant
4. all of the above.
Which of the following has synandrous condition
(1) Colocasia
(2) Cucurbita
(3) Mimosa
(4) Ricinus
Coconut's husk fibre, coir of commerce is extracted from
1. epicarp
2. mesocarp
3.endocarp
4. all of these
Inflorescence of which one of the following sets completely develop into composite fruits?
(1) Spike, corymb, hypanthodium
(2) Spike, female catkin, hypanthodium
(3) Umbel, catkin, spadix
(4) Female catkin, corymb, spike
How many plants in the list given below have marginal placentation?
Mustard, Tulip, Asparagus, Arhar, Sunhemp, Chilli, Colchicine, Onion, Moong, Pea, Gram, Tobacco, Lupin
(1) Four
(2) Five
(3) Six
(4) Three
Which of the following is not a main function of the root system?
(1) Absorption of water and minerals from the soil, Help in protection of plant
(2) Providing a proper anchorage to the plant parts
(3) Storing reserve food materials
(4) Synthesising of plant growth regulators
In some plants a slender lateral branch arises from the base of the main axis and growing aerially for sometime, it archs downwards to touch the ground.
Find the odd one with respect to statement.
(1) Mint
(2) Jasmine
(3) Grass
(4) All of these
Alternate phyllotaxy means
(1) A single leaflet arises at each node
(2) A single leaf arises at each node
(3) Two leaflets arise at each node
(4) Two leaves arise at each node
Perianth is
(1) Distinct calyx and Corolla
(2) Indistinct calyx and Corolla
(3) Amorphous calyx and Corolla
(4) Both 2. and 3.
