Biology Test 240

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Biology Test 240

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Weekly Quiz Competition

Question 1
4 / -1

An inflorescence in which flowers arise from different points but reach the same level is known as

A
Spadix

B
Catkin

C
Corymb

D
Umbel
Question 2
4 / -1

Syngenesious condition is

A
When filaments of stamens are fused and the anthers are free

B
When filaments are free and the anthers are fused

C
When both the filaments and the anthers are fused

D
When all the carpels in a gynoecium are fused
Question 3
4 / -1

Empty glumes are modified

A
Stamens

B
Carpels

C
Petals

D
Bracts
Question 4
4 / -1

Zig-Zag development of inflorescence axis is an example of

A
Helicoid cyme

B
Verticillaster

C
Scorpioid cyme

D
Umbel
Question 5
4 / -1

In which family (9) + 1 androecium condition is found?

A
Malvaceae

B
Papilionaceae

C
Solanaceae

D
Poaceae

Solution

Correct option is B)

In Papilionaceae-the androecium is seen in diadelphous condition. 10 stamens are seen in two bundles 9 + 1. 9 together form one bundle whereas the single stamen forms another bundle.
Question 6
4 / -1

Which is the floral formula of tobacco ?

A

B

C

D
Question 7
4 / -1

The period between appearance of two successive leaf primordia on two nodes is called

A
Plastoderm

B
Plastochron

C
Internode

D
Phyllotaxy
Question 8
4 / -1

Eustele is found in

A
Dicots

B
Monocots

C
Ferns

D
Pteridophytes
Question 9
4 / -1

Apospory is defined as formation of

A
Embryo sac from nucellus

B
Formation of embryo sac from integument

C
Formation of embryo directly from a cell of nucellus

D
Formation of embryo egg of an embryo-sac developed directly from megaspore
Question 10
4 / -1

Winged fruits occur in

A
Papaver

B
Moringa

C
Flower

D
Both (b) and (c)

Solution

Winged fruits occur in Moringa (option 2).

The fruit of Moringa is a long, slender pod, which is often referred to as a drumstick. The pod contains seeds that are surrounded by papery, wing-like structures that allow the pod to be carried by the wind over long distances, hence the term "winged fruits".

Papaver (option 1) is a genus of herbaceous plants that belongs to the family Papaveraceae. Its fruits are capsules that contain numerous small, black seeds, but they are not winged.

Flower (option 3) is a reproductive structure of flowering plants and not a fruit.

Therefore, the correct answer is option 2: Moringa.