Variation caused by mutation, according to Hugo deVries are :

Which of the following two STIs can be transmitted through contaminated surgical equipment and are not completely curable?

Which of the following plant is pollinated by insects?

The phenomenon where a single gene can have multiple phenotypic effects is known as:

Which of the following serve as an important biofertiliser in paddy field?

Bacillus thuringiensis produces insecticidal proteins that kills insects, belongs to -
(A) Dipterans
(B) Lepidopterans
(C) Coleopterans
(D) Ephimepterans
Choose the correct answer from the options given below:

Which one of the mentioned reasons does not cause the loss of biodiversity?

If \(A=\left[\begin{array}{cc}2 & 3 \\ 5 & -2\end{array}\right]\) then:

The value of \(\left|\begin{array}{lll}1 & b & c+a \\ 1 & c & a+b\end{array}\right|\) is

Read the passage carefully and answer the questions based on the passage:
Pollen pistil interaction involves all events from the landing of pollen grains on the stigma until the pollen tube enters the embryo sac (when the pollen is compatible). When a pollen tube grows through the style and enters into the ovules, it finally discharges two male gametes in one of the synergids. Syngamy and triple fusion are two fusion events occur in angiosperms. Thus, angiosperms exhibit double fertilization. The products of these fusions are the diploid zygote and triploid primary endosperm nucleus. Zygote develops into embryo and primary endosperm cell forms the endosperm tissue. The developing embryo passes through different stages before maturation.
With reference to reproduction in flowering plants, which one of the following is incorrect?

The least distance of distinct vision of a person is 50 cm. He wants to read a book placed at 25 cm. The focal length of the spectacles would be :

The derivative of \(f(\cot x)\) with respect to \(g(cosec x)\) at \(x=\frac{\pi}{4}\) (where \(\left.f^{\prime}(1)=2, g^{\prime}(\sqrt{2})=4\right)\) is:

Typhoid is caused by -