A) polyembryony B) adventive embryony C) parthenogenesis D) parthenocarpy Answer:C) parthenogenesis Explanation: Parthenogenesis is the development of an embryo from... View Article
A) nucellus B) microsporangium C) stamen D) microspore Answer:D) microspore Explanation: The microspore mother cells or pollen mother cells present... View Article
A) megaspore mother cell B) ovule C) nucellus D) embryo sac Answer:D) embryo sac Explanation: The embryo sac represents the... View Article
A) mesogamy B) chalazogamy C) pseudogamy D) porogamy Answer:D) porogamy Explanation: Entry of pollen tube through the micropyle is the... View Article
A) megagametophyte B) megaspore C) megagamete D) megasporophyll Answer:A) megagametophyte Explanation: The embryo sac represents female gametophyte or megagametophyte. The... View Article
A) geitonogamy B) autogamy C) allogamy D) xenogamy Answer:A) geitonogamy Explanation: Geitonogamy refers to the pollination from anther to the... View Article
A) 75 B) 25 C) 50 D) 100 Answer:B) 25 Explanation: Each microspore mother cell divides by meiosis to produce... View Article
A) 12 B) 16 C) 4 D) 8 Answer:B) 16 Explanation: Pollen grains develop inside the anther from sporogenous tissues.... View Article
A) one polar nucleus and one male gamete B) two polar nuclei and one male gamete C) two polar nuclei... View Article
A) Downward B) Upward C) Left D) Right Answer: A) Downward Explanation: Anatropous ovule is the most common type of ovule... View Article
A) antipodal cells B) central cell C) synergids D) egg cell Answer: C) synergids Explanation: Male gametes are released into the... View Article
A) formation of pollen B) reception of pollen by stigma C) opening of flower bud D) development of anther Answer:C)... View Article
A) campylotropous B) hemitropous C) orthotropous D) anatropous Answer:B) hemitropous Explanation: In the hemitropous ovule, the main ovule body, i.e.... View Article
It corresponds to the change of the zona pellucida while responding to fertilization. This changes the binding and solubility attributes... View Article
The AR permits the penetration of the sperm of the ZP and union to the oolemma. As a result, finding... View Article
The rate of diffusion in the lungs is affected by many factors, one of which is the surface area of... View Article
An example of induced fit is Adenylate kinase. The enzyme operates by somewhat altering the conformation when the essential substrates,... View Article
Clots can be seen in arteries or veins – vessels forming part of the circulatory system of the body. While... View Article
It is a chronic state of pain distinguished by the diffuse tender points on the body when an abnormal diagnostic... View Article
One authentication of cancer is the transition from aerobic metabolism to anaerobic observed inside the tumour cells. This is called... View Article
