List of top Biology Questions asked in GUJCET

This defines the 'Operon'.
In E.Coli cloning vector pBR322, antibiotic resistance genes (\(amp^R\)) indicate which restriction sites?
In flowering plants, 'triple fusion' is the combination of_____.
Proteins encoded by the genes _____and ____, which control the cotton bollworms.
Match the following. choose the correct option. 
Column-1
 
Column-2
 
(i)Propionibacterium Shermanii (P)Fermenting fruit prices to produce ethanol
(ii)Saccharomyces Cerevisiae(Q)Citric Acid
(iii)Aspergillus niger(R)Swiss Cheese
(iv)Trichoderma polysporum(S)Immuno-suppressive
The diagram given below represents the operation of natural selection on different trails. Choose the correct option.

 
From IR-8 and Taichung Native-I, which variety of semi- dwarf crop was derived?
Choose the correct option, which is not true for 'inbreeding depression'.
Identify the plant, from where a chemical is extracted whose skeletal structure is given below.
This is the correct statement for IgE.
In Turner's Syndrome, during cell division, which type of Aneuploidy is seen?
Sex- determination, in Humans is identified by :
Choose the correct option which can be used by the females as injections or implants under the skin for emergency contraceptives from the following: (i) progestogens (ii) progestogen+ estrogen combinations (iii) estrogen (iv) progestagens
In females, MTP's are considered relatively safe during ______ weeks of pregnancy.
During Human fertilization, this induces changes and acts as a barrier, and ensure that only one sperm can enter and fertilize the ovum.
These hormones are produced in women during pregnancy only :
Choose the correct sequence of transport at sperms in human from seminiferous tubules is:
In a microsporangium, which layer is generally having more than one nucleus?
What indicates 'X' and 'Y' in the following diagram?
At which trophic level, you will keep the species 'sparrow'?
In a particular condition, the decomposition rate is slower if detritus is rich in and ____.
A few organisms can tolerate and thrive in a wide range at temperatures. they are known as:
____and ____ are the two basic processes that contribute to an increase in population density.
Choose the correct option showing population interactions
Alexander Fleming was the first person to discover 'Penicillin' by chance. He worked on which bacterium?