Correct Answer: C) absence of large vacuoles

Explanation

This Biology question is asking about the characteristics of an animal cell. The options given are A) presence of chloroplasts, B) possession of a cellulose cell wall, C) absence of large vacuoles (which is the correct answer), and D) presence of large vacuoles. An animal cell is a type of eukaryotic cell that makes up the tissues and organs of animals. Unlike plant cells, animal cells do not have chloroplasts, which are organelles responsible for photosynthesis. Therefore, option A is incorrect. Cellulose is a type of carbohydrate that provides structure and support to plant cells. However, animal cells do not have a cellulose cell wall. Instead, they have a flexible cell membrane that allows for movement and communication between cells. Therefore, option B is also incorrect. Vacuoles are membrane-bound organelles found in cells that store waste, nutrients, and other substances. While animal cells do have vacuoles, they are generally smaller in size and not as prominent as the large central vacuole found in plant cells. Therefore, option D is incorrect, and option C, absence of large vacuoles, is the correct answer. Understanding the differences between plant and animal cells is important in Biology as it helps to differentiate the characteristics of these two types of cells and their functions in living organisms.

Correct Answer: A. interest rate

Explanation

The speculative demand for money is simply a need for money for investment purposes, which is indirectly influenced by interest rates. When the rates of interest is high, people would most likely want to invest their money so as to get a high return on investment

Correct Answer: D) Depletion unit

Correct Answer: A) Plateau State

Explanation

Assop Falls is a popular tourist attraction in Nigeria. It is a beautiful waterfall that attracts tourists from all over the country. Plateau State, where Assop Falls is located, is known for its many beautiful tourist attractions. Some of these attractions include wildlife parks, museums, and waterfalls.

It is important to note that knowing the location of tourist attractions is important for tourism development in Nigeria. This is because tourism contributes to the economic growth of the country. By attracting tourists to beautiful places like Assop Falls, the country can generate revenue and create job opportunities for its citizens.

Correct Answer: A. 8

Correct Answer: C. resurrection

Correct Answer: C) Accumulation of lactic acid in the muscle cells

Explanation

Without any iota of doubt the answer is accumulation of lactic acid because it occur in the muscle after a strenous exercise and this cause oxygen to be hinder instead a large amount of acid produce which cause muscle cramp

Explanation

(a)Farm mechanisation is the application of engineering principles and technology in agricultural production, storage rnd processing on the farm. It is applicable to land preparation, planting, fertilizer application, weeding and crop harvesting, rearing, care and feeding of animals as well as processing and storage of farm produce using appropriate farm machinery.

b)(i) The advantages of farm mechanization are:

(1) It increases production of large quantity of food;

(2) The yield is maximised by using more efficient farm operators;

(3) Farm labour output per man hour is increased;

(4) Timelines of operations is enhanced;

(5) Elimination or minimization of human drudgery in form of work;

(6) increases the revenue base of farmers;

(7) Large acreage/hectarage of farms can be cultivated;

(8) accomplishes lots of work with less human labour;

(9) Certain farm operations can only be accomplished by mechanized devices;

(10) There is reduction in the cost of agricultural operations per unit output;

(11) usually improves the quality of some farm produce e.g. rice processing;

(12) It releases labour to other sectors of the economy;

(13) It saves time and quickens operations;

(14 promotes specialization in farm operations.

(ii) Disadvantages of farm mechanization are:

(1) It causes damage crops if care is not taken;

(2) It can also cause injury of fruits during harvest and the injury can serve as a source infection;

(3) The machines are costly to purchase

(4)inadequate technical know -how on the use and handling of the machines and equipment;

(5) inadequate spare or replacement parts;

(6) high cost of maintenance of machines

(7) It aids the spread of pests and diseases through contaminated machines;

(8) It does not need human labour to control it

(9) This can lead to unemployment;

(10) reliance on fuel whose supply is not always stable;

(11) It can lead to environmental pollution;

(12) leads to soil compaction and destruction of soil structure.

Correct Answer: B. 75N

Explanation

Let the normal reaction be R

R = Wcosø = mgcosø

= 15 * 10cos 60°

= 150 * 0.5000

= 75N

Correct Answer: D. 0°

Explanation

\(\sin \theta = \tan \theta \implies \frac{\sin \theta}{1} = \frac{\sin \theta}{\cos \theta}\)

Equating, we have

\(\cos \theta = 1 \implies \theta = \cos^{-1} 1\)

= \(0°\)