| Questions |
GUJCET Chemistry Answer Key 2025 |
| Which of the following species - specific viruses are excellent candidates..... |
Baculoviruses |
| Which of the following bacteria can fix atmospheric nitrogen...... |
Azospirillium, Azotobactcr |
| Which of the following techniques is used to introduce alien DNA into animal cells? |
Micro Injection |
| If the PCR method is repeated for 30 cycles then how many times amplification of the DNA segment will be obtained? |
1 Billion Times |
| Which of the following is used to deliver a piece of DNA known as T-DNA... |
Agrobacterium tumifaciens |
Find out the inappropriate for:
Transgenic animals are used in investigation for many human diseases. |
AIDS |
| Crystals of Bt toxins produced by some bacteria do not kill the bacteria themselves because __________ |
toxin is inactive |
| Use of this method resulting in the formation of pomato |
Somatic hybridisation |
| Select the type of biotic interaction with an example in which one of the interacting... |
Commensalism-epiphyte on mango branch |
| If in a pond there were 40 lotus plants last year and through reproduction... |
0.2 |
| Which of the following has the largest population in a food chain? |
Decomposers |
| Which of the following option is inappropriate for the components of the ecosystem |
Biosphere |
| In which condition the Prey might become extinct? |
when the Prey is over exploited |
| The main difference between the 'sixth extinction' and the previous five extinctions is that the sixth extinction |
is occurring at a faster rate |
| Alexander von Humboldt described for the first time |
species-area relationship |
| There are 4 microsporangia present in an anther. Each possess 1000 sporogenous issue cells. How many pollen-tetrad... |
4000 |
| Pollen grains of which of the following family do not maintain viability... |
Poaceae |
| Match the following |
p-iii, q-iv, s-ii |
| In a lady the first menstruation began at onset of 14 years of age and menopause observed at the comletio of 46 years of age. She became mother of... |
366 |
| In a woman uterine contraction does not occur for normal delivery. What do you think the doctors inject to induce delivery? |
Oxytocin |
| Select the correct option for the name of 'X' structure in the given diagram... |
secondary spermatocyte, 23 |
| Which of the following structures constitutes the female accessory ducts? |
all of these |
| Increase level of which hormone induces ovulation? |
LH |
| Which of the following statement is not correct for MTP? |
Nearly 50 to 60 million MTPs are performed in a year all over the world. |
| Which of the following symptoms belong to STIs? |
Only i and iii |
| Which of the following is correct for α-Thalessemia |
Chromosome-16 |
| Out of the five organisms given below, how many organisms have the same number of chromosomes in the male and... |
3 |
| Who united the knowledge of chromosomal segragation with Mendelian principles... |
Sutton |
| Chromosomal abberrations are commonly observed in _________. |
Oncogenic cells |
| Scientists have identified __________ locations of snips in humans. |
1.4 million |
| Find out the odd one for convergent evolution. |
Bobcat ---> Tasmanian lion cat |
| Who worked in Malay Archipelago? |
Alfred Wallace |
| Which of the following examples show the common ancestry? |
Only i and ii |
| Identify the X in the given diagram. |
Lymph nodes |
| Which of the following cause allergy? |
Histamine |
| The B-lymphocytes produce an army of proteins in response to pathogens into our blood to fight with them. What are these proteins called? |
antibodies |
| Bioactive molecule obtained from which of the following microbes... |
Streptococcus |
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