Correct Answer: D. streams of electrons

Correct Answer: A. translatory motion of the molecules of the liquid

Correct Answer: B. commensalism

Correct Answer: D. 3y = 2x + 5

Explanation

\(3x + 2y + 4 = 0\)

Rearrange:

\(2y = -3x - 4\)

Divide both sides by 2

y = \(\frac {-3 \times - 4}{2}\)

y = \(\frac {-3}{2} \times - 2\)

∴ the gradient of the line 3x + 2y + 4 = 0 is \(\frac {-3}{2}\)

If two lines are perpendicular to each other ∴ \(m_1 x m_2\) = -1

Let \(m_1 = \frac {-3}{2} \therefore m_2 = \frac {-1}{m_1} = \frac {-1}{-3/2} = \frac {2}{3}\)

From the equation of a line which is given as m = \(\frac {y - y_1}{x - x_1} where (x_1, y_1) = (2,3)\)

\(\therefore \frac {2}{3} = \frac {y - 3}{x - 2}\)

=3(y - 3) = 2(x - 2)

=3y - 9 = 2 x -4

=3y = 2 x -4 + 9

∴ 3y = 2x + 5

Correct Answer: C. 0.80%

Correct Answer: D) Succession is often not directional and so difficult to predict

Explanation

This Biology question is asking which statement about plant succession is incorrect. Plant succession is the process of changes in the types of plants that grow in a particular area over time. The options are: Option A: Plant succession is the process of community change at one place over time. Option B: Plant succession is usually measured over the course of several years to hundred years. Option C: Succession proceeds from pioneer to climax phases. Option D: Succession is often not directional and so difficult to predict (Correct). Statements A, B, and C are correct. Statement A explains what plant succession is, which is the process of changes in the types of plants that grow at a particular place over time. Statement B is also correct, as plant succession can take a long time, sometimes several years or even hundreds of years to be completed. Statement C is also correct, as plant succession proceeds from pioneer species to climax species, which are the final and stable plant community that develops in a particular area. Option D is the correct option as it is the only incorrect statement. Succession is often directional and predictable. Pioneer species start the process of succession by colonizing bare land. As the pioneer species grow and develop, they change the environment and make it more suitable for other species to grow. This leads to the growth of new species and an increase in biodiversity. The direction of succession is towards the climax community, which is stable and self-sustaining. In summary, the correct answer to this question is Option D, which states that succession is often not directional and difficult to predict, which is incorrect. Plant succession is directional and predictable

Correct Answer: D. provision of shade

Correct Answer: B. issuing of currency

Correct Answer: D. prevents the passage of bill by making long speeches

Correct Answer: D. Humidity