CBSE Questions for Class 11 Medical Biology Plant Kingdom Quiz 14 - MCQExams.com

• The correct answer is OPTION B.
  

• Thalloid liverworts have a ribbonlike, or strap-shaped, body that grows flat on the ground.
• The thallus is dorsiventral and intently closed to the substrate. The plant body of liverworts is a thalloid in Marchantia.
  
• So, the correct answer is option B.

• Ulothrix - They are green, filamentous algae, mostly found in freshwater with low salinity areas like; ponds, lakes etc.
• Spirogyra - They belong to the largest group of green algae and are commonly found in freshwater bodies like; deep ponds, rivers etc.
• Ectocarpus - They belong to the group of brown algae and mostly found in the colder wetlands. They are commonly found in marine water bodies.
• Batrachospermum - They are from the group of red algae, most of the members of red algae are found in marine water but few are found in fresh water. E.g.; Batrachospermum.

• Female gametophyte produces the egg cell which is enclosed in the ovule, while male gametes are contained within the pollen grain. The fusion of male and female gamete results in a diploid zygote. The endosperm is a pre- fertilization tissue arising from the female gametophyte and hence, is haploid in nature. 
  
• Siphonogamy is the formation of the pollen tube to transport the male gamete to the female gamete  for  the process of fertilization, which occurs in both gymnosperms and angiosperms. However, fertilization is not oogamous type.
• Male and female cones are on the same plant in Pinus, hence Pinus is monoecious.
  

Correct Option: D

Explanation:

• The seed habit is a process in which the germination of megasporangium is done to form a female gametophyte that is traced in pteridophytes.
• In gymnosperms, female gametophyte is germinated from megaspores.
• Antheridiophores and archegoniophores are present in bryophytes, not pteridophytes.
• The gametophyte of pteridophytes do not exibit a protonemal and leafy stage.

• It also holds onto nutrients so that they aren't rinsed out of the soil when you water the plant. 
• Peat moss alone does not make a good potting medium. 
• Sphagnum is sometimes called peat moss because much of the dead material in a peat bog comes from sphagnum moss that grew on top of the bog and induces the formation of peat.
• So. Option A is correct.

• The epididymis is a long, coiled tube that stores sperm and transports it from the testes. 
• The smooth muscle of the epididymis pushes the sperm along tubule with slow waves of peristalsis so that the sperm traverse its entire 20-foot length in about two weeks. 
• During this time the sperm is supplied with nutrients secreted from the lining of the epididymis and incubated while it matures.
•  Hence, Spermatozoa receive nutrition from Epididymis.
• So, the correct answer is 'Epididymis'.

• Numerical taxonomy which is now easily carried out using computers is based on all observable characteristics.
• Number and codes are assigned to all the characters and the data are then processed.
• Some important characters are not given more importance.
• Cytological information like chromosome number are not included.
• At the same time hundreds of characters can be considered.
• So, the correct answer is option D.