Question

Ф.И._________________________________________________________________ Вариант 2.Корни не выполняют функции:1) закрепления растения в почве; 2) всасывание растворов минеральных веществ из почвы; 3) фотосинтеза; 4) запасания питательных веществ.Корневая система у пшеницы мочковатая потому, что:1) у растения много корней; 2) у пшеницы нет выраженного главного корня; 3) у корней разные названия; 4) есть выраженный главный корень.Сколько участков (зон) можно выделить в строении корня:1) 2; 2) 4; 3) 5; 4) 6.Под корневым чехликом располагается зона:всасывания; 2) проведения; 3) деления; 4) растяжения.Побег – это:1) стебель; 2) стебель с листьями и почками; 3) стебель, листья и корень; 4) почка.Каких почек не существует:1) боковых; 2) придаточных; 3) верхушечных; 4) пазушных.Междоузлие – это:1) участок стебля между самыми удалёнными узлами; 2) участок стебля между двумя соседними узлами; 3) участок корня под корневым чехликом; 4) расстояние между жилками в листе.Пазушная почка располагается:1) на междоузлии; 2) на верхушке побега; 3) на корне; 4) в пазухе листа.Листовая почка называется:1) вегетативной; 2) генеративной; 3) пазушной; 4) придаточной.Если лист имеет одну крупную жилку, которая ветвится на более мелкие жилки, то такое жилкование листьев называется:1) дуговое; 2) параллельное; 3) сетчатое; 4) может быть любое.У какого растения листья сложные:1) у тополя; 2) у яблони; 3) у дуба; 4) у акации.Какое растение имеет листья с дуговым жилкованием листьев:1) берёза; 2) подорожник; 3) пшеница; 4) клён.Какую функцию не выполняют листья:1) испарение воды; 2) газообмен; 3) фотосинтез; 4) запасание органических веществ.

Answer 1

Ответ:

1. 3)

2. 2)

3. 3)

4. 3)

5. 2)

6. 2)

7. 4)

8. 1)

9. 3)

10. 4)

11. 2)

12. 4)

Answer 2

Function of Roots:

The roots of a plant serve several functions, including: 1. Anchoring the plant in the soil. 2. Absorbing water and minerals from the soil. 3. Storing nutrients. 4. Facilitating the exchange of gases. 5. Providing support for the plant's above-ground structures.

Characteristics of Wheat's Root System:

The root system of wheat is described as "mochkovataya," which means "nodular" or "clustered." This is because wheat plants have many roots that form clusters or nodules. The characteristic of having a clustered root system is not related to the presence or absence of a main root or the different names given to the roots.

Number of Zones in Root Structure:

The root structure can be divided into different zones or regions based on their functions. The number of zones that can be identified in the structure of a root depends on the classification system used. However, a commonly used classification identifies four main zones in the root structure: the root cap, the zone of cell division, the zone of elongation, and the zone of maturation.

Location of the Zone Under the Root Cap:

The zone that is located under the root cap is the zone of cell division. This is where new cells are actively dividing and producing new cells that will eventually differentiate into different types of root tissues.

Definition of a Shoot:

A shoot refers to the above-ground part of a plant, including the stem, leaves, and reproductive structures such as flowers and fruits. It does not include the root system.

Types of Buds:

There are different types of buds found in plants, including: 1. Lateral buds: These buds are found in the leaf axils, which are the angles between the leaf and the stem. 2. Adventitious buds: These buds develop in unusual or unexpected places on the plant, such as on the stem or roots. 3. Terminal buds: These buds are located at the tip or apex of the stem or branch. 4. Axillary buds: These buds are found in the axils of the leaves, where the leaf meets the stem.

Definition of an Internode:

An internode refers to the section of a stem between two adjacent nodes. It is the distance between two sets of leaves or leaf scars on a stem.

Absence of Certain Types of Buds:

All types of buds mentioned above exist in plants. There is no specific type of bud that does not exist in plants.

Definition of a Leaf Axil:

A leaf axil refers to the angle formed between the upper side of a leaf and the stem to which it is attached. It is the location where lateral buds are found.

Types of Leaf Buds:

Leaf buds can be classified into different types based on their location and function. Some common types of leaf buds include: 1. Vegetative buds: These buds give rise to new leaves and branches. 2. Floral buds: These buds develop into flowers. 3. Adventitious buds: These buds develop in unusual or unexpected places on the plant, such as on the leaf or stem.

Leaf Venation:

Leaf venation refers to the pattern of veins in a leaf. If a leaf has one prominent central vein that branches into smaller veins, it is called pinnate or feather-like venation. This is the characteristic of dorsi-ventral leaves, such as those found in most dicot plants. If the veins are parallel and run straight from the base to the tip of the leaf, it is called parallel venation. This is the characteristic of leaves found in monocot plants, such as grasses.

Plants with Compound Leaves:

Plants that have compound leaves are those in which the leaf blade is divided into multiple leaflets. Each leaflet is attached to a common leaf stalk or petiole. Examples of plants with compound leaves include acacia, clover, and locust trees.

Leaf Venation with Curved Veins:

If a leaf has curved veins that form an arc-like pattern, it is called arcuate or arc-like venation. This type of venation is not commonly used to describe leaf venation patterns. The most common types of leaf venation are pinnate, parallel, and palmate.

Functions of Leaves:

Leaves perform several important functions in plants, including: 1. Photosynthesis: Leaves contain chlorophyll, which enables them to capture sunlight and convert it into energy through photosynthesis. 2. Gas exchange: Leaves have small openings called stomata that allow for the exchange of gases, such as oxygen and carbon dioxide, with the atmosphere. 3. Transpiration: Leaves release water vapor through stomata, which helps to cool the plant and transport nutrients. 4. Storage: Some leaves can store organic compounds, such as sugars and starches, for later use by the plant.

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