1.
Which plant grows from a bulb?
Correct Answer
D. Onion
Explanation
Onions grow from bulbs, which are underground storage structures that contain the plant's nutrients. The bulb of an onion is composed of layers that store food for the plant to survive during dormant periods. When the conditions are favorable, the onion bulb sprouts and grows into a new plant. Therefore, the correct answer is Onion.
2.
Which plants have tube-like systems for transporting liquid?
Correct Answer
A. Vascular
Explanation
Vascular plants have tube-like systems called xylem and phloem that transport liquids throughout the plant. The xylem transports water and minerals from the roots to the rest of the plant, while the phloem transports sugars and other organic compounds from the leaves to other parts of the plant. This allows vascular plants to efficiently distribute nutrients and water, enabling their growth and survival. Flowering plants, evergreen plants, and fungi do not have this specialized system for transporting liquids.
3.
What plant part lies between the petals and the stem?
Correct Answer
A. Sepal
Explanation
The correct answer is sepal. The sepal is a part of the flower that lies between the petals and the stem. It is usually green in color and protects the developing flower bud. Sepals can be found in various shapes and sizes depending on the type of flower. They are often mistaken for petals, but they serve a different purpose in the reproductive process of the plant.
4.
What sugary liquid do bees collect from flowers?
Correct Answer
A. Nectar
Explanation
Bees collect nectar from flowers. Nectar is a sugary liquid that is produced by flowers to attract pollinators like bees. Bees use their long, tube-like tongues called proboscis to suck up the nectar from the flowers. They then store the nectar in a special stomach called the honey stomach, where enzymes start to break down the complex sugars into simpler sugars. The bees then return to the hive and regurgitate the nectar, passing it to other worker bees who further process it into honey. Nectar serves as the primary source of energy for bees and is also used to make honey.
5.
What waxy coating protects leaves?
Correct Answer
A. Cuticle
Explanation
The waxy coating that protects leaves is called the cuticle. The cuticle is a thin, waterproof layer that covers the surface of leaves, preventing excessive water loss through evaporation and protecting the leaf from damage caused by UV radiation, pests, and pathogens. It also helps to reduce the risk of dehydration and maintains the overall health and functioning of the leaf.
6.
What is a fern's leaf called?
Correct Answer
A. Frond
Explanation
A fern's leaf is called a frond. This term is commonly used to describe the large, divided leaves of ferns that are characteristic of their appearance. The fronds of ferns are usually green and have a delicate, feathery or lacy texture. They are responsible for photosynthesis and play a crucial role in the reproduction of ferns by producing spores.
7.
What gas that humans breathe out do plants take in during photosynthesis?
Correct Answer
C. Carbon Dioxide
Explanation
Plants take in carbon dioxide during photosynthesis. This process involves the conversion of carbon dioxide and water into glucose and oxygen, with the help of sunlight. The glucose produced by plants is used as energy for growth and development, while the oxygen is released into the atmosphere, which is then breathed in by humans and other animals. Therefore, carbon dioxide is the gas that humans breathe out and plants take in during photosynthesis.
8.
Which person takes care of plants and sells them?
Correct Answer
C. Horticulturist
Explanation
A horticulturist is a person who takes care of plants and sells them. They have expertise in cultivating and maintaining plants, including flowers, fruits, vegetables, and ornamental plants. Horticulturists are knowledgeable about plant diseases, pest control, soil management, and plant propagation techniques. They often work in nurseries, garden centers, or botanical gardens, where they not only care for plants but also offer advice and guidance to customers on plant selection and care. Therefore, a horticulturist is the correct answer for the person who takes care of plants and sells them.
9.
What do petals of a flower form?
Correct Answer
A. Corolla
Explanation
The petals of a flower collectively form the corolla. The corolla is the inner whorl of the flower, consisting of the petals. It is usually brightly colored and serves to attract pollinators. The corolla plays a vital role in the reproductive process of the flower by helping in pollination.
10.
Which of these is a very young plant?
Correct Answer
A. Seedling
Explanation
A seedling refers to a very young plant that has just started to grow from a seed. It is in the early stages of development and is characterized by its small size and delicate structure. Seedlings are typically tender and vulnerable, requiring special care and attention to ensure their healthy growth. In contrast, compost, succulent, and fungus are not specifically associated with being young plants.
11.
What is the top layer of the rainforest called?
Correct Answer
C. Canopy
Explanation
The top layer of the rainforest is called the canopy. The canopy is formed by the uppermost branches and leaves of the trees, creating a dense layer of vegetation that acts as a roof over the forest floor. It provides shade and protection for the lower layers of the rainforest, and is home to a wide variety of plant and animal species. The canopy also plays a crucial role in regulating the temperature and humidity of the rainforest ecosystem.
12.
Which type of plant stem is green and soft?
Correct Answer
C. Herbaceous
Explanation
Herbaceous stems are green and soft because they are composed of cells that have not yet undergone secondary growth, which would result in the development of woody tissues. These stems are found in herbaceous plants, which are typically smaller and have a shorter lifespan compared to woody plants. The green color is due to the presence of chlorophyll, which allows the stem to carry out photosynthesis. The softness of herbaceous stems is a result of their lack of lignin, a substance that provides rigidity to woody tissues.
13.
What holds a plant in the ground?
Correct Answer
B. Root
Explanation
The root holds a plant in the ground. Roots are responsible for anchoring the plant and absorbing water and nutrients from the soil. They provide stability and support to the plant, allowing it to grow and withstand external forces such as wind or rain. Without roots, a plant would not be able to survive or thrive in its environment.
14.
What is the outside layer of a tree called?
Correct Answer
A. Bark
Explanation
The outside layer of a tree is called bark. Bark serves as a protective covering for the tree, shielding it from external elements such as extreme temperatures, pests, and diseases. It also helps regulate the tree's water loss and provides structural support. Additionally, bark contains living tissues that aid in the transportation of nutrients and water throughout the tree.
15.
What kind of tree loses its leaves during its dormant period?
Correct Answer
C. Deciduous
Explanation
Deciduous trees are the type of trees that lose their leaves during their dormant period. This is a natural process that allows the tree to conserve energy and protect itself from harsh weather conditions. Unlike coniferous trees, which have needle-like leaves that stay green year-round, deciduous trees have broad leaves that change color and eventually fall off in preparation for the winter months. This adaptation helps the tree to survive the cold and dry conditions of winter, and the leaves will regrow in the spring when the tree becomes active again.
16.
Which plant is a conifer?
Correct Answer
C. Pine
Explanation
Pine is a conifer because it belongs to the coniferous family of plants. Conifers are characterized by their needle-like or scale-like leaves, and they produce cones as their reproductive structure. Pine trees have needle-like leaves and produce cones, making them a classic example of a coniferous plant. Maple, pineapple, and rose are not conifers as they do not possess these characteristics.
17.
Rice and wheat are both in what plant family?
Correct Answer
C. Grasses
Explanation
Rice and wheat are both in the grasses plant family. This is because both rice and wheat belong to the Poaceae family, commonly known as the grass family. This family includes many other important cereal crops such as corn, barley, and oats. Grasses are characterized by their long, narrow leaves, hollow stems, and fibrous root systems. They are one of the most economically important plant families, providing staple food crops for human consumption and serving as a food source for livestock.
18.
Which of these is a large group of aquatic plants?
Correct Answer
A. Algae
Explanation
Algae is a large group of aquatic plants. Algae are photosynthetic organisms that can be found in both freshwater and marine environments. They range from single-celled microorganisms to complex multicellular forms. Algae play a crucial role in aquatic ecosystems by producing oxygen, serving as a food source for other organisms, and contributing to nutrient cycling. They come in various colors and forms, including green, red, brown, and even blue-green. Some examples of algae include seaweed, kelp, and phytoplankton.
19.
Which plant has seeds that fly through the air?
Correct Answer
C. Dandelion
Explanation
Dandelion is the correct answer because it is a plant that produces seeds with fluffy white structures called pappus that allow them to be carried by the wind. When the dandelion seed head is mature, the pappus acts as a parachute, helping the seeds to be dispersed over long distances by catching the wind. This adaptation increases the chances of the seeds finding new areas to grow and reproduce.