CUET · BIOLOGY · PYQ PAPER 2025
Which one is not the example of an invasive alien species?
- A Eicchornia
- B Lantana
- C Quagga
- D Clarias gariepinus
Answer & Solution
Correct Answer
(C) Quagga
Step-by-step Solution
Detailed explanation
Quagga
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from BIOLOGY
- The ability of some snails and fish to avoid summer related problems like heat and dessication is calledCUET 2023 Easy
- Match List I with List II
List I List ll (A) Dodo (I) Africa (B) Quagga (II) Russia (C) Thylacine (III) Mauritius (D) Steller Sea Cow (IV) Australia
Choose the correct answer from the options given below:CUET 2023 Medium - EcoRl, a significant tool in rDNA technology is -CUET 2025 Medium
- All food chains begin with producers, except -CUET 2025 Hard
- A typical angiosperm anther is generally:CUET 2025 Easy
- Which one of the following layers of microsporangium nourishes the developing pollen grains?CUET 2025 Medium
More PYQs from CUET
- DNA recombinant technology involves the use of restriction endonucleases. After having cloned the gene of interest and having optimised the conditions to induce the expression of the target protein, one has to consider producing it on a large scale. The cells harbouring cloned genes of interest may be grown on a small scale in the laboratory. In order to link the alien DNA, the vector needs to have very few, preferably single, recognition sites for the commonly used restriction enzymes. Presence of more than one recognition sites within the vector will generate several fragments, which will complicate the gene cloning. In Biolistics or gene gun method cells are bombarded with high velocity micro particles of gold or tungsten coated with DNA. The ligation of alien DNA is carried out at a restriction site present in one of the two antibiotic resistance genes. For example, you can ligate a foreign DNA at the BamH I site of tetracycline resistance gene in the vector pBR322. Since the DNA is enclosed within the membranes, we have to break the cell open to release DNA along with other macromolecules such as RNA, proteins, polysaccharides and also lipids. The RNA can be removed by treatment with ribonuclease whereas proteins can be removed by treatment with protease. Other molecules can be removed by appropriate treatments and purified DNA ultimately precipitates out after the addition of chilled ethanol.
If any protein encoding gene is expressed in a heterologous host, it is called asCUET 2025 Hard - A bag contains 4 red and 6 green balls. A ball is drawn at random, its colour is noted and is returned to the bag.
One additional ball of the colour drawn is put in the bag. Again a ball is then drawn from the bag. The probability of this ball to be of green colour isCUET 2025 Easy - Which of the following disorders are the results of aneuploidy?
(A) Haemophilia
(B) Down's Syndrome
(C) Thalassemia
(D) Turner's Syndrome
Choose the correct answer from the options given below:CUET 2025 Easy - Which of the following functions is onto?CUET 2023 Medium
- The function \(f(x)=\frac{x-1}{x\left(x^2-1\right)}, x \neq 1, f(1)=1\), is discontinuous at:CUET 2023 Medium
- Two point charges of 1 C each are separated from each other by a distance of 1 m in vacuum.
The force of interaction between them is:CUET 2025 Medium