Related Questions
The process by which cells loose their specialisation is called
Dedifferentiation
Differentiation
Transdifferentiation
Apoptosis
Which of the following extra-embryonic membranes in amniotes primarily functions in waste storage?
Chorion
Amnion
Yolk sac
Allantois
Heterophylly can be observed in
I. cotton
II. coriander
III. larkspur
Select the right option
I, II and III
I and II
II and III
I and III
During tissue culture, if parenchyma cells from a potato tuber are used to generate callus, what process are the cells undergoing?
Redifferentiation
Transdifferentiation
Dedifferentiation
Cell elongation
Intussusception is
Removal of old material from cell wall
Deposition of new material into cell wall during differentiation
Deposition of new material into cell wall during cell division
Another name of cell division
Which plant demonstrates minimal morphological changes in response to varying light intensities?
Sunflower
Cotton
Maize
Bean
When transition from juvenile to adult is gradual than this type of development is called
Homoblastic development
Heteroblastic development
Homoheteroblastic development
Hetero and homoblastic development
Which of the following statements are correct?
I. A multicellular organism is composed of mainly three types of cells
II. Undifferentiated cells are stem cells and are unspecialised cells, which usually possesses the power of division
III. Differentiated cells are post-mitotic cells and are specialised to perform specific functions
IV. Dedifferentiated cells are differentiated cells which revert to undifferentiated state to take over the function of division
I, II and III
II, III and IV
I and IV
All of the above
A scientist is culturing leaf mesophyll cells. The cells lose their specialized features and form an unorganized mass. This is NOT an example of:
Dedifferentiation
Callus formation
Cellular totipotency
Differentiation
During oogenesis in mammals, polar bodies are formed. Which statement best describes the function of polar bodies?
To provide nutrients to the developing oocyte.
To allow for the reduction of chromosome number while retaining most of the cytoplasm in the oocyte.
To initiate the process of fertilization.
To guide the sperm towards the oocyte.
