TLS Online TPP Program

#Question id: 11787


Giving prostaglandin E2 (PGE2) to a pregnant woman may result in an abortion. What is the best explanation for this finding?

#Biochemistry
  1. PGE2 strongly stimulates uterine contraction
  2. PGE2 causes constriction of the arteries leading to the placenta
  3. PGE2 stimulates the release of oxytocin from the posterior pituitary
  4. PGE2 increases the secretion of progesterone from the corpus luteum
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TLS Online TPP Program

#Question id: 37899

#Plant Biotechnology

In the culture of nucellar tissue, Malt Extract is often used as a supplement. It can be replaced by a combination of:

TLS Online TPP Program

#Question id: 37900

#Plant Biotechnology

Consider the following statements regarding the Auxin:Cytokinin ratio:
1. High Cytokinin favors shoot formation.
2. High Auxin suppresses bud differentiation.
3. High Cytokinin:Auxin ratio can promote both xylem and phloem differentiation.

Which of the statements given above are CORRECT?

TLS Online TPP Program

#Question id: 37901

#Plant Biotechnology

Tropane alkaloid production in root cultures is commonly associated with plants belonging to:

TLS Online TPP Program

#Question id: 37902

#Plant Biotechnology

Which of the following plants is known for producing tropane alkaloids in root cultures?

TLS Online TPP Program

#Question id: 37903

#Plant Biotechnology

Match the scientists in List I with their specific contribution in List II:

Column IColumn II
A. Endosperm1. Triploid tissue formed after double fertilization
B. Albuminous seed2. Endosperm persists in mature seed
C. First report of endosperm culture3. Lampe and Mills (1933)
D. Immature endosperm culture4. Proliferation common; organogenesis rare
E. Critical age for rice endosperm culture5. 4–7 days after pollination
F. Medium supplements for endosperm culture6. Yeast extract or casein hydrolysate
G. Mature endosperm of parasitic species7. Requires cytokinin ± auxin

TLS Online TPP Program

#Question id: 37904

#Plant Biotechnology

Which of the following statements regarding Endosperm Culture is INCORRECT?