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NEET • BIOLOGY • MORPHOLOGY OF FLOWERING PLANTS
Morphology of flowering plants practice · Medium
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61
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Analyzing
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If a tree flowers thrice in a year in October,
January and July in Northern India, the plant
is
January and July in Northern India, the plant
is
View answer and explanation
Correct option: D
thermo sensitive but photo insensitive
Option D (thermo sensitive but photo insensitive) is correct because flowering thrice a year at different times (October, January, July) suggests the plant is responding to temperature changes rather than photoperiod (day length).
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Understanding
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Regions of root from the root tip to base are
View answer and explanation
Correct option: C
Region of meristematic Region of elongation Region of maturation
Option C is correct because the root regions are arranged in the order of meristematic activity, elongation, and maturation from the tip to the base.
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Understanding
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What is the fruit that develops from a tricarpellary, syncarpous, inferior ovary with parietal placentation?
View answer and explanation
Correct option: A
Pepo
Option A (Pepo) is correct because pepo is a fleshy fruit that develops from a tricarpellary, syncarpous, inferior ovary with parietal placentation, characteristic of the Cucurbitaceae family.
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Remembering
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The hardest part of drupe is
View answer and explanation
Correct option: B
Endocarp
Option B (Endocarp) is correct because the endocarp is the innermost layer of the pericarp in a drupe and is characteristically hard and stony.
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Application
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Among the list of examples
Mustard, Plum, Rose, Peach, Brinjal, Petunia,
Guava, Cucumber
How many plants have hypogynous flower?
Mustard, Plum, Rose, Peach, Brinjal, Petunia,
Guava, Cucumber
How many plants have hypogynous flower?
View answer and explanation
Correct option: C
3
The correct answer is C (3) because Mustard, Brinjal, and Petunia have hypogynous flowers, where the ovary is superior.
66
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Application
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In a flower of a plant the number of carpels is
equal to the number of inner whorl of perianth
lobes and cotyledons 1/3 of carpel number.
What is the arrangement of ovules on placenta
of the flower of that plant?
equal to the number of inner whorl of perianth
lobes and cotyledons 1/3 of carpel number.
What is the arrangement of ovules on placenta
of the flower of that plant?
View answer and explanation
Correct option: A
Axile
The correct answer is A (Axile) because if the number of carpels equals the number of inner whorl perianth lobes and cotyledons are 1/3 of the carpel number, it indicates a dicot with axile placentation.
67
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Analyzing
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Choose the odd one w.r.t. stem modification.
View answer and explanation
Correct option: C
Tendrils of pea
Option C (Tendrils of pea) is correct because tendrils of pea are leaf modifications, while the others (Tendrils of watermelon, Phylloclade, Thorns of Bougainvillea) are stem modifications.
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Understanding
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Pineapple fruit develops from
View answer and explanation
Correct option: D
A cluster of compactly born flowers on an axis
Option D (A cluster of compactly born flowers on an axis) is correct because pineapple is a multiple fruit that develops from an entire inflorescence, which is a cluster of flowers on an axis.
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Application
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Among bitter gourd, mustard, brinjal, pumpkin, chinarose, lupin, cucumber, sunhemp, gram, suave, bean, chilli, plum, petunia, tomato, rose, withania, potato, onion, Aloe, and tulip how many plants have hypogynous flowers
View answer and explanation
Correct option: A
15
Option C (Assertion is true but Reason is false) is correct because Helianthus (sunflower) is a pseudanthium (false flower), but the reason is incorrect as it does possess bracts forming an involucre, not a true calyx.
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Understanding
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Which of the following is not a characteristic feature of Fabaceae?
View answer and explanation
Correct option: D
Corolla, five petals, polypetalous, anterior one large and outermost
Option D (Corolla, five petals, polypetalous, anterior one large and outermost) is correct because in Fabaceae, the corolla has five petals, but the posterior (outermost) petal is the largest (standard or vexillum), not the anterior one.
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Understanding
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Pineapple (ananas) fruit develops from a
View answer and explanation
Correct option: C
Cluster of compactly borne flowers on a common axis
Option C is correct because pineapple develops from a cluster of flowers on a common axis, which is a multiple or composite fruit.
72
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Analyzing
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How many plants in the list below have
composite fruits that develop from an
inflorescence? Walnut, poppy, radish, fig,
pineapple, apple, tomato, mulberry
composite fruits that develop from an
inflorescence? Walnut, poppy, radish, fig,
pineapple, apple, tomato, mulberry
View answer and explanation
Correct option: D
3
Option C (2) is correct because only fig and pineapple are composite fruits that develop from an inflorescence (multiple flowers). Mulberry is also a composite fruit.
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Understanding
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A flower which can be divided into two equal halves by only one plane is
View answer and explanation
Correct option: A
Zygomorphic
Option A (Zygomorphic) is correct because zygomorphic flowers exhibit bilateral symmetry, meaning they can be divided into two equal halves by only one plane.
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Understanding
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Choose the correct match
View answer and explanation
Correct option: B
Axile placentation – Lemon
Option B (Axile placentation – Lemon) is correct because lemon exhibits axile placentation.
75
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Analyzing
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Two plants ‘A’ and ‘B’ belonging to Solanaceae are observed. In plant ‘A’, the number of locules in the ovary of a flower is half of that of its carpel number. In plant B, the number of locules in the ovary of a flower is double the number of carpels. Identify the plants ‘A’ and ‘B’ respectively
View answer and explanation
Correct option: A
Capsicum, Datura
Option C (Statement I is incorrect but Statement II is correct) is correct because Belladonna, Ashwagandha and Muliathi belong to Solanaceae and Leguminosae respectively, and Petunia is an ornamental plant belonging to Solanaceae.
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76
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Analyzing
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Select the odd one w.r.t. stem tendrils.
View answer and explanation
Correct option: C
Pisum, Smilax
Option C (Pisum, Smilax) is correct because Pisum (pea) has stem tendrils, but Smilax has leaf tendrils, making them the odd one out as the others have stem tendrils in both plants.
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Understanding
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The endosperm is used by cotyledon, the cotyledon is
View answer and explanation
Correct option: D
Non-endospermic
Option D (Non-endospermic) is correct because in non-endospermic seeds, the cotyledons utilize and store the endosperm during seed development.
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Remembering
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Non-endospermic seeds are found in
View answer and explanation
Correct option: D
Bean
Option D (Bean) is correct because bean seeds are non-endospermic, meaning they do not retain endosperm at maturity.
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Understanding
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The difference in phloem of gymnosperms and angiosperms is due to
View answer and explanation
Correct option: C
Companion cell
Option C (Companion cell) is correct because angiosperms have companion cells associated with their sieve tubes, while gymnosperms lack them.
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Remembering
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Lateral branches with short internodes and each nodes bearing a rosette of leaves above and a tuft of roots below is found in aquatic plants like Pistia and Eichhornia. These lateral branches are called
View answer and explanation
Correct option: B
Offsets
Option B (Offsets) is correct because offsets are lateral branches with short internodes and a rosette of leaves and tuft of roots, found in aquatic plants like Pistia and Eichhornia.
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Remembering
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Potato is a modification of
View answer and explanation
Correct option: A
Stem
Option A (Stem) is correct because a potato is a modified stem, specifically a tuber, which stores food.
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Remembering
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Placentation is the arrangement of
View answer and explanation
Correct option: B
Ovules in ovary
Option B (Ovules in ovary) is correct because placentation specifically refers to the arrangement of ovules within the ovary.
83
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Remembering
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At the two ends of the embryonical axis
View answer and explanation
Correct option: C
Both (a) and (b)
Option C (Both (a) and (b)) is correct because the embryonal axis has the radicle at one end and the plumule at the other.
84
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Analyzing
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In an inflorescence, two types of small, sessile flowers were observed. They are arranged in centripetal manner and have reduced hair-like sepals. Which pair of the following I.Nectar glands at the base of the corollacharacters are not associated with such flowers? I.Nectar glands at the base of the corolla II.Axile placentation III.Superior ovary IV.Scaly bracts
View answer and explanation
Correct option: A
II and III
Option A (II and III) is correct because flowers arranged in a centripetal manner with reduced hair-like sepals are characteristic of Asteraceae, which typically have basal placentation and an inferior ovary.
85
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Analyzing
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Assertion: Prickles of plant have multiple roles
along with protection of plant.
Reason: They are superficial in origin.
along with protection of plant.
Reason: They are superficial in origin.
View answer and explanation
Correct option: B
If both Assertion and Reason are true but Reason
is not the correct explanation of Assertion
is not the correct explanation of Assertion
Option C (Hydrophytes) is correct because root caps are often reduced or absent in hydrophytes (aquatic plants) due to the reduced need for protection in an aquatic environment.
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Understanding
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Potato and sweet potato
View answer and explanation
Correct option: B
Have edible parts, which are analogous organs
The correct answer is B (Have edible parts, which are analogous organs) because potato is a stem and sweet potato is a root, making their edible parts analogous, not homologous.
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Remembering
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Region of root present just above the root cap is called the region of
View answer and explanation
Correct option: B
Meristematic activity
Option B (Meristematic activity) is correct because the region just above the root cap is the site of active cell division.
88
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Analyzing
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Which one of the following organisms is correctly matched with its three characteristics?
View answer and explanation
Correct option: B
Tomato-twisted aestivation, axile placentation, berry
The correct answer is B (Tomato-twisted aestivation, axile placentation, berry) because tomato exhibits twisted aestivation, axile placentation, and produces a berry fruit.
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Understanding
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In which plant underground stems spread to new niches and when older parts die new plants are formed?
View answer and explanation
Correct option: D
Both (1) and (2)
The correct answer is D (Both (1) and (2)) because both grasses and strawberries use underground stems to spread to new niches and form new plants when older parts die.
90
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Remembering
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If a primary root continues to grow, the type of root system will be known as
View answer and explanation
Correct option: C
tap
Option C (tap) is correct because a tap root system is characterized by a primary root that continues to grow and forms the main root.
Revision notes and key takeaways
Review MORPHOLOGY OF FLOWERING PLANTS in your textbook or class notes, then use this set to check your understanding.
Showing 61-90 of 146 questions
