Question:
Which of the following statements is/are incorrect regarding bryophytes ?
Which of the following statements is/are incorrect regarding bryophytes ?
Updated On: Jun 23, 2023
- Sporophyte is parasitic over gametophyte
- Fertilization takes place in presence of water
- Zygote undergoes mitosis to form embryoproper
- Zygote undergoes meiosis to produces porophyte
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The Correct Option is D
Solution and Explanation
In bryophytes the sexual reproduction is advanced oogamous type. Male gametes, the antherozoids, are motile and small whereas the female gametes, the eggs are large and non-motile. The fertilisation takes place in the presence of water. The zygote, immediately after fertilisation divides
repeatedly by mitosis without undergoing any resting period. The embryo is not liberated but is retained within the archegonium where it develops into a sporophyte. The sporophyte is physiologically and physically dependent on
the gametophyte. The sporophyte consists of foot, seta and capsule.
repeatedly by mitosis without undergoing any resting period. The embryo is not liberated but is retained within the archegonium where it develops into a sporophyte. The sporophyte is physiologically and physically dependent on
the gametophyte. The sporophyte consists of foot, seta and capsule.
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Concepts Used:
Plant Kingdom
The Plant Kingdom comprises all the plants that have some shared characteristics. These are bacteria (prokaryotes), photosynthetic plants, fungi, and several non-photosynthetic plants.
Read Also: Two Kingdom Classification
Several features of Kingdom Plantae are as follows:
- They are stationary. They are static and usually remain in one place only.
- They have branches that expanded and green leaves due to the presence of chlorophyll.
- They are an autotrophic mode of nutrition that simply means they prepare their food with the help of water, sunlight and carbon dioxide. It is further known as self-nutrition.
- They indulge in photosynthesis during the day and therefore more carbon dioxide is needed during the day and at night it is released.
- They secure their food in the form of starch-like algae.
- They have an inelastic wall around their cell known as a cell wall comprised of cellulose.
- There is an absence of the nervous system and excretory system.
- Reproduction is entirely dependent on air, insects and water. Asexual and vegetative method of reproduction is noticed or detected.
- The non-photosynthetic plants acquire their food through parasitism, i.e through their host like Indian pipe.
Read More: Classification of Plants