Question

2. A)Does the gametophore of the moss have true xylem or phloem? Are there any cells present that function in transport?

2.B)List and describe the parts of the male gametophore of Marchantia. What is the structure in which the flagellated sperm are produced?

Answer 1

2. A) The gametophore of the moss lack the true xylem or phloem most plants use for water and nutrients transportation. Instead, they absorb moisture directly by osmosis into cells.

B) List of the parts of the male gametophore of Marchantia:

• Thallus: It is responsible for the process of photosynthesis on the outer part and stocking food in the inner part. It's also involved in asexual reproduction because the gemmae are located on it.
• Gemma cups: The gemma cups are cup-like structures which contain vegetative reproductive structures called gammae (are found on thalli), the Gemma cells separates from the parent and develop into a new individual.
• Rhizoids:  Rhizoids are the tiny structures that functions like a root in support or absorption. It is responsible for water and nutrients fixation and absorption from the soil through the process of capillary action.
• Antheridiophore: The antheridiophore is the stalk-like structure bearing the male sex organ, antheridia. An antherida produces and contains antherozoids (or sperm) during pollination.