Science 1: Plants Trivia Quiz

Answer: lungs

Plants are called lungs of nature. They are called so because they use carbon dioxide gas from the atmosphere (thus purifying the atmosphere from excess carbon dioxide) and release oxygen gas which is used by human beings during respiration.

Answer: Chlorophyll

Plasmids are present only in plant cells. Many plasmids have one or more than one pigment. Plasmids are of three types, the most important of which are chloroplasts. These are present in green parts of plants, particularly in leaves. Chlorophyll is present in chloroplasts and helps in the process of photosynthesis (making of food). Chlorophyll is also the cause of green color of plants.

Answer: False

Animals can move from one place to another but plants cannot. There are also some animals who also remain attached for whole of their lives to stones e.g. Sycon. Sycon belongs to phylum Porifera. It has a skeleton made of calcium carbonate. Its body is flexible but strong and remains attached to the rocks.

Answer: Cell wall

The cell wall is the outermost semi-rigid and nonliving boundary of plant cells. In its chemical composition, cellulose is the most prominent substance. The thickness of the cell wall varies in different cells; e.g. in a plant's xylem, vessel elements and tracheids, the cell wall is thick. Parenchyma cells have thin cell walls.

The cell wall of fungi is made up of chitin. In animals, the outermost layer is the cell membrane and no cell wall is present.

Answer: False

Answer: Plants don't have hearts.

Plants do not have hearts. So, no question arises about chambers. Sometimes, these situations occur in different tests or examinations. However, we can say that an animal possess a heart. In human beings, the heart has four chambers.

Answer: photosynthesis

The process by which green plants prepare their own food from carbon dioxide and water in the presence of sunlight and chlorophyll is called photosynthesis. This reaction is shown as
Water + Carbon dioxide -> Glucose + Oxygen
In this equation oxygen is produced as a by-product.

Answer: Both of these.

Forests play an important role in human life. Forests not only provide us fruits and vegetables but are also a source of livelihood for wood cutters. We can obtain wood from forests and can use wood in beds, sofas, sports goods and other such materials. Forests also have a pleasant effect on climate; as well, they slow down the current of fast flowing floods, thus reducing the disasters caused by floods.

Answer: True

Bryophytes are the simplest land plants without vascular tissues (xylem and phloem). Liverworts, hornworts and mosses are groups of bryophytes. Marchantia, Anthoceros and hornwort are the examples of liverworts, hornworts and mosses respectively. The body of Marchantia is thick branched and has a green thallus.

Answer: water

Plants need water for many other activities besides photosynthesis and if they do not get enough water, they will not photosynthesize quickly. Water enters the root hairs from soil and after passing through various cells, reaches the xylem of the root. From here it moves to the stem and then to the veins of leaves. Finally, water reaches in mesophyll cells in the leaves.

It provides hydrogen for the synthesis of glucose and helps in opening and closing of stomata. If leaves get less water, less stomata open, which retards the rate of photosynthesis.