Correct Answer: C. 62

Explanation

Un = n(n² + 1)

U⁵ = 5(² + 1)

= 5(25 + 1)

= 5(26) = 130

U⁴ = 4(4² + 1) = 4(16 + 1)

= 4(17) = 68

U5 - U4 = 130 - 68

= 62

Correct Answer: C) Intercellular space

Explanation

The question is asking which part of a leaf contains air. It provides five options to choose from: guard cell, palisade layer, intercellular space, vascular bundle, and upper epidermis. First, it's important to understand the basic structure of a leaf. Leaves have an upper epidermis and a lower epidermis that protect the internal structures of the leaf. Between these two layers lies the mesophyll, which is where photosynthesis occurs. The mesophyll is divided into two layers: the palisade layer and the spongy layer. The palisade layer is a tightly packed layer of cells that contains many chloroplasts and is responsible for most of the photosynthesis in the leaf. The spongy layer is made up of loosely packed cells that allow for gas exchange. Now, let's look at the options provided in the question. Guard cells are specialized cells that control the opening and closing of stomata, which are small pores on the surface of leaves that allow for gas exchange. Palisade layers are a part of the mesophyll that contains many chloroplasts and is responsible for most of the photosynthesis in the leaf. Vascular bundles are the veins of the leaf that transport water and nutrients throughout the plant. The correct answer to the question is option C, intercellular space. Intercellular spaces are the air pockets that are found between cells in the spongy layer of the mesophyll. These spaces allow for the diffusion of gases, which is essential for photosynthesis. In summary, the structure of a leaf contains many different parts, including the upper and lower epidermis, the mesophyll (which is made up of the palisade and spongy layers), guard cells, and vascular bundles. The correct answer to this question is the intercellular space, which is found between cells in the spongy layer of the mesophyll and allows for gas exchange.

Correct Answer: C) Debentures preference shareholders

Explanation

Ordinary shareholders are the regular shareholders who hold common shares in a company. They have voting rights and are entitled to dividends after all other obligations are met.

Preference shareholders are shareholders who hold preference shares in a company. These shares have certain preferential rights, such as receiving dividends before ordinary shareholders and having a fixed dividend rate.

Debentures preference shareholders are shareholders who hold preference shares that are secured by debentures. Debentures are a type of long-term debt instrument issued by a company to raise funds. In this case, the debentures preference shareholders have a higher priority in receiving payment than ordinary shareholders and preference shareholders.

Cumulative preference shareholders are preference shareholders who are entitled to receive any unpaid dividends from previous years before ordinary shareholders receive their dividends.

Based on this information, the correct answer to the question is Option C: Debentures preference shareholders. They are paid first when a firm liquidates because their shares are secured by debentures, giving them a higher priority in receiving payment.

It's important to note that the order of payment may vary depending on the specific circumstances and agreements of the company. However, in general, debentures preference shareholders have a higher priority in receiving payment compared to other shareholders. To learn more about this topic, please refer to the relevant sections of your Commerce textbooks.

Correct Answer: B. a change in quantity demanded

Correct Answer: (c) Mosquitoes as a Vector

Correct Answer: A. their names were written in heaven

Correct Answer: b. Cocoa

Correct Answer: B. provision of credit facilities to exporters

Correct Answer: B. rent

Explanation

Land as one of the factors of production has rent as a reward for ownership. This means as a land owner, you get paid rent on either a monthly or yearly basis for the use of the land for productive activities.

Correct Answer: A. tall and lean