Morphology of Flowering Plants - Online Test
Q1. The mature seeds of plants do not possess endosperm because
Answer : Option D
Explaination / Solution:
The mature seeds of plants do not possess endosperm because, it gets used up by the developing embryo during seed development.
Q2. The single cotyledon of cereal grain is
Answer : Option A
Explaination / Solution:
In monocotyledonous seeds single cotyledon is called as scutellum. It is found in cereal grains like rice, wheat, maize and other monocots.
Q3. Identify the correct one with respect to the symmetry of flower.
Answer : Option D
Explaination / Solution:
When a flower is divided into two equal radial halves in any radial plane passing through the centre, it is said to be actinomorphic. e.g., mustard, datura, chilli.
Q4. The ovary belonging to a single free carpel is called
Answer : Option C
Explaination / Solution:
When more than one carpel is present, they may be free, it is called apocarpous
Q5. Parenchymatous cushion present inside the ovary, where ovules are borne is called
Answer : Option D
Explaination / Solution:
Placenta is the parenchymatous cushion present inside the ovary, ovules are borne. Ovules are attached with ovary at placenta to get nourishment.
Q6. The parietal placentation is seen in
Answer : Option A
Explaination / Solution:
In parietal placentation, the ovules develop on the inner wall of the ovary or on peripheral part. Ovary is one-chambered but it becomes two chambered due to the formation of the false septum, e.g., mustard and Argemone.
Q7. The form of thalamus in which ovary is at top and stamens, petals and sepals are borne below is called
Answer : Option A
Explaination / Solution:
In the hypogynousflower, thegynoecium occupies the highest position while the other parts are situatedbelow it. The ovary in such flowers is said to be superior.
Q8. Which plant shows valvate aestivation?
Answer : Option B
Explaination / Solution:
When sepals or petals in a whorl just touch one another at the margin, without overlapping, as in Calotropis, it is said to be valvate.
Q9. When the stamens in a flower remain free, it is said to be
Answer : Option A
Explaination / Solution:
The stamens in a flower may either remain free (polyandrous) or may be united in varying degrees.
Q10. Mango is an example of
Answer : Option D
Explaination / Solution:
Drupe is an indehiscent fruit in which an outer fleshy part and surrounds a shell of hardened endocarp with a seed. Mango is an example of drupe.
