Biology · Science General
Botany and Plant Science
4,989 Questions
Botany and plant science delve into the biological study of plant life, covering structural anatomy, physiological processes, and reproductive mechanisms. Key topics include inflorescence patterns, root modifications, and seed development, which are vital for biology sections in medical entrance exams. This collection of practice questions helps solidify understanding of complex plant functions.
Plant ReproductionPlant AnatomyRoot ModificationsInflorescence PatternsPlant Morphology
Botany and Plant Science Questions
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1 - a, 2 - b, 3 - c
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1 - a, 2 - c, 3 - b
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1 - c, 2 - b, 3 - a
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1 - c, 2 - a, 3 - b
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1 - b, 2 - c, 3 - a
B
Correct answer
Explanation
Yes, it is the correct answer, as all are correctly matched.
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A haploid sporophyte phase produces diploid spores.
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The gametophyte typically consists of a photosynthetic prothallus.
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The gametophyte produces gametes by mitosis.
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A sperm is mobile and flagellate.
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The fertilised egg grows by mitosis.
A
Correct answer
Explanation
A diploid sporophyte phase produces haploid spores by meiosis (a process of cell division which reduces the number of chromosomes by a half).
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The plant body of a hornwort is a diploid gametophyte stage.
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Many hornworts develop internal mucilage-filled cavities when groups of cells break down.
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The horn-shaped sporophyte grows from an archegonium .
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The pseudo-elaters are multi-cellular.
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The spores are polar.
A
Correct answer
Explanation
The plant body of a hornwort is a haploid gametophyte stage. This stage usually grows as a thin rosette or ribbon-like thallus between one and five centimeters in diameter.
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Fucus spiralis
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Fucus vesiculosus
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Laminaria digitata
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Sargassum
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Chondrus crispus
B
Correct answer
Explanation
Fucus vesiculosus was the original source of iodine, discovered in 1811. It was used extensively to treat goitre, a swelling of the thyroid gland related to iodine deficiency.
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Straw mushroom
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shiitake
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Sparassis
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Coprinus comatus
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Shimeji
C
Correct answer
Explanation
Sparassis is a genus of parasitic and saprobic mushrooms characterised by its unique shape and appearance. This appearance can be described as similar to a sea sponge, a brain, or the head of a cauliflower, from which it has been given its popular name.
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If a frond is divided into pinnae, the frond is called once pinnate.
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Some fronds are not pinnately compound.
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Fern fronds lacks sporangia.
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Fern fronds arises from the stem.
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Fronds may bear hairs, scales and glands.
C
Correct answer
Explanation
Fern fronds often bear sporangia, where the plant's spores are formed, usually on the underside (abaxial surface) of the pinnae, but sometimes marginally or scattered over the frond.
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Storage of food
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Assimilation of food
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Respiration
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Translocation of organic nutrients
B
Correct answer
Explanation
Orchid roots perform the function of food manufacture after greening.
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Napiform roots
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Conical roots
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Tuberous roots
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Fusiform roots
C
Correct answer
Explanation
The roots which are thick and fleshy and do not maintain any definite shape are called tuberous roots
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Tuberous tap root
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Tuberous adventitious root
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Annulated adventitious root
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Nodulose roots
B
Correct answer
Explanation
Sweet potato possesses tuberous adventitious root.
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Beaded roots
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Annulated roots
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Fasciculated roots
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Nodulose roots
B
Correct answer
Explanation
Annulated roots have a series of ring like swellings.
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Fasciculated roots
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Nodulose roots
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Tuberous roots
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Moniliform roots
D
Correct answer
Explanation
An adventitious root with beaded appearance is called Moniliform root
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Conical root
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Tuberous root
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Napiform root
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Fusiform root
C
Correct answer
Explanation
Beet root is a napiform root
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Sunflower
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Dandelion
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Rose
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Casablanca lily
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B
Correct answer
Explanation
This is the correct answer. Dandelion flower opens its petals in bright light and closes at dusk.
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Roots are positively geotropic.
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Roots are positively phototropic.
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Roots bear reproductive part.
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Roots have distinct nodes and inter-nodes.
A
Correct answer
Explanation
Roots are positively geotropic.
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providing nutrition to root
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cell division
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supporting the root
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protecting the root
D
Correct answer
Explanation
Root cap covers the meristem and has protective function.