Biology - Study Mode

[#376] The male sex organs in a flower is the ________ .
Correct Answer

(B) Stamen

Explanation

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.

[#377] Which part of flower produces pollen grains that are generally yellowish in colour?
Correct Answer

(C) Stamens

Explanation

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.

[#378] Which one of the following is the longest flower in the world?
Correct Answer

(C) Rafflesia

Explanation

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.

[#379] Usually the conspicuous, coloured, attractive part of flower is termed as
Correct Answer

(C) Petals

Explanation

Solution: The parts of a flower that are often conspicuously coloured are called petals.

[#380] The process in which energy stored in carbohydrates is released
Correct Answer

(B) Respiration

Explanation

Solution: Photosynthesis absorbs energy from sunlight to build carbohydrates in the chloroplasts, and aerobic cellular respiration releases that stored energy by using oxygen to break down carbohydrates.