alleryAlstonia shows which type of phyllotaxy?
- Whorled
- Alternate
- Opposite
- Spiral only
Show answer and solution
Correct answer: A. Whorled
More than two leaves arising at a node form a whorl, as in Alstonia.
CBSE Class 11 (Science) Morphology and Anatomy of Flowering Plants — practice questions — page 6
Explore 195 free Morphology and Anatomy of Flowering Plants questions in CBSE Class 11 (Science) Biology. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 151–180 of 195.
Alstonia shows which type of phyllotaxy?Read the answer and worked solution →A flower is best described as a modified what?Read the answer and worked solution →When a shoot tip transforms into a flower, how is the flower borne?Read the answer and worked solution →A cymose inflorescence has flowers borne in which order?Read the answer and worked solution →What is the reproductive unit of angiosperms meant for sexual reproduction?Read the answer and worked solution →Which two whorls of a flower are accessory organs?Read the answer and worked solution →In lily, calyx and corolla are not distinct. What is the combined whorl called?Read the answer and worked solution →A flower having both stamens and carpels is described as what?Read the answer and worked solution →Which flower shows radial symmetry (actinomorphic)?Read the answer and worked solution →Which flower is zygomorphic, divisible into similar halves in only one vertical plane?Read the answer and worked solution →Which flower is asymmetric, with no vertical plane giving similar halves?Read the answer and worked solution →A flower with floral appendages in multiples of five is called what?Read the answer and worked solution →Which flowers are epigynous with an inferior ovary?Read the answer and worked solution →Which whorl is the outermost in a flower?Read the answer and worked solution →A calyx with united sepals is described as what?Read the answer and worked solution →Which aestivation has petals just touching at the margins without overlapping?Read the answer and worked solution →China rose, lady's finger and cotton show which aestivation?Read the answer and worked solution →Cassia and gulmohur have overlapping margins in no particular direction. What is this aestivation?Read the answer and worked solution →In a pea flower, which petal is the largest and overlaps the lateral wings?Read the answer and worked solution →Each stamen consists of which two parts?Read the answer and worked solution →Where are pollen grains produced in a flower?Read the answer and worked solution →What is a sterile stamen called?Read the answer and worked solution →Stamens attached to the petals, as in brinjal, are described as what?Read the answer and worked solution →Stamens united into a single bundle, as in china rose, are called what?Read the answer and worked solution →Pea stamens form two bundles. What is this condition?Read the answer and worked solution →Which part of the carpel receives pollen grains?Read the answer and worked solution →Ovules are attached to what flattened, cushion-like structure in the ovary?Read the answer and worked solution →Lotus and rose have free carpels. What is this condition?Read the answer and worked solution →Mustard and tomato have fused carpels. What is this called?Read the answer and worked solution →Which placentation shows ovules in two rows along the ventral suture, as in pea?Read the answer and worked solution →
Worked practice questions
A flower is best described as a modified what?
- Root
- Leaf blade
- Shoot
- Fruit wall
Show answer and solution
Correct answer: C. Shoot
In a flower the shoot apical meristem changes to floral meristem, so it is a modified shoot.
When a shoot tip transforms into a flower, how is the flower borne?
- In a raceme
- In a cyme
- In a whorl
- Solitary
Show answer and solution
Correct answer: D. Solitary
A flower formed by direct transformation of a shoot tip is always solitary.
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