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Practice MCQ Questions and answers on Biology-GK

Learn and practice General Knowledge questions and answers on Biology with very easy and understandable explanations. GK questions are very helpful different type of competitive exams. Page-1 section-7

Each section contains 100 MCQs on Biology .
1
The group of pistils or carpels is collectively spoken off as a
Discuss
Answer & Solution
Answer: Option B
Solution:
The group of pistils or carpels is collectively spoken off as a Gynoecium.
2
Each stamen has a slender stalk or filament at the top of which a pollen bearing organ is present.
Discuss
Answer & Solution
Answer: Option B
Solution:
The part of the stamen where pollen is produced is called anther.
3
All sepals collectively constitute a structure termed as
Discuss
Answer & Solution
Answer: Option A
Solution:
Sepals (collectively called the calyx) are modified leaves that encase the developing flower. They are sterile floral parts and may be either green or leaflike or composed of petal-like tissue.
4
An expanded basal portion of carpel is called as
Discuss
Answer & Solution
Answer: Option B
Solution:
A pistil typically consists of an expanded basal portion called the ovary, an elongated section called a style and an apical structure that receives pollen called a stigma.
5
Taken together the petals constitute
Discuss
Answer & Solution
Answer: Option B
Solution:
Together, all of the petals of a flower are called corolla.
6
The female sex organs in a flower is the ________ .
Discuss
Answer & Solution
Answer: Option C
Solution:
As a plant's reproductive part, a flower contains a stamen (male flower part) or pistil (female flower part), or both, plus accessory parts such as sepals, petals, and nectar glands. The stamen is the male reproductive organ.
7
The male sex organs in a flower is the ________ .
Discuss
Answer & Solution
Answer: Option B
Solution:
As a plant's reproductive part, a flower contains a stamen (male flower part) or pistil (female flower part), or both, plus accessory parts such as sepals, petals, and nectar glands. The stamen is the male reproductive organ. It consists of a pollen sac (anther) and a long supporting filament.
8
Which part of flower produces pollen grains that are generally yellowish in colour?
Discuss
Answer & Solution
Answer: Option C
Solution:
Stamens are the part of the flower that produces pollen. Pollen is fine yellowish dust made by stamens inside a flower that contains the male sperm cells.
9
Which one of the following is the longest flower in the world?
Discuss
Answer & Solution
Answer: Option C
Solution:
The flower with the world's largest bloom is the Rafflesia arnoldii. This rare flower is found in the rainforests of Indonesia. It can grow to be 3 feet across and weigh up to 15 pounds. It is a parasitic plant, with no visible leaves, roots, or stem.
10
Usually the conspicuous, coloured, attractive part of flower is termed as
Discuss
Answer & Solution
Answer: Option C
Solution:
The parts of a flower that are often conspicuously coloured are called petals.