Botany

A:

The cactus is a plant that flowers, and the blooms generate fruit that bears seeds; it is the seeds that end up leading to new cactus plants. Bats provide the pollination for some species of cactus, and the flowers bloom in the spring each year. It is also possible to grow a cactus from broken fragments of an existing cactus, but the new plant is genetically identical.

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  • What is a photosystem?

    Q: What is a photosystem?

    A: A photosystem is an aggregate of protein structures in the thylakoid membranes of plants that aids in photosynthesis. It absorbs light energy and transfers electrons onto a reaction center. Thylakoid membranes are found in the plant chloroplasts.
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  • What are the three parts of a seed?

    Q: What are the three parts of a seed?

    A: The three parts of a seed are the embryo, the endosperm and the seed coat. The embryo is a miniature form of the plant that is fed by the nutrition contained in the endosperm. The embryo is protected from the external environment by the seed coat.
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  • What is the function of a plant's stem?

    Q: What is the function of a plant's stem?

    A: A plant’s stem serves as the support structure for its above ground components and as a conduit through which water and nutrients can travel. When a stem is green due to the presence of chlorophyll, it also produces food. In some plant species, the stem stores energy or food for future use.
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  • How does moss reproduce?

    Q: How does moss reproduce?

    A: Moss reproduces both sexually and asexually. For sexual reproduction, plants produce a male and female structure, often on different plants, and the sperm swims toward the eggs to accomplish fertilization. In the case of asexual reproduction, any time part of the stem or even just a leaf breaks off, the bits regenerate to create a new moss plant.
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  • What is the scientific name for mint?

    Q: What is the scientific name for mint?

    A: The scientific name for the genus of mint plants is Mentha. Each distinct species of mint has its own scientific name. Peppermint's scientific name, for example, is Mentha piperita, while Mentha spicata is spearmint.
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  • What are the five stages of seed germination?

    Q: What are the five stages of seed germination?

    A: Seed germination begins when the first root breaks through the seed wall and ends when the first pair of true leaves begin the process of photosynthesis. The three stages in-between are when the primary root, which is called the radicle, develops root hairs, the first young shoot rises emerges from the soil and the first pair of true leaves form to begin to manufacture food for the plant.
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  • What happens during the process of germination?

    Q: What happens during the process of germination?

    A: Germination takes place in three steps or stages and takes the young seed from a dormant state to the very beginning stage of growing as a seedling. Germination takes place in plants, flowers and trees: this process is to members of the plant family what metamorphosis is to insects such as moths and butterflies. The process requires several critical ingredients to begin, including water, sunlight and nutrients.
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  • Where is food stored in a plant?

    Q: Where is food stored in a plant?

    A: There are several places where plants store food, the most common being in the roots or in their fruit. One way of knowing where the food stores are is by observing which parts of the plant are eaten by animals.
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  • What is photosynthesis?

    Q: What is photosynthesis?

    A: Photosynthesis is the process by which green plants manufacture their own food. The process takes place in small structures within the plant’s cells called chloroplasts. Photosynthesis evolved about 3 billion years ago, yet it remains the most important method for harvesting the sun’s energy on the planet.
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  • What is the economic importance of gymnosperms?

    Q: What is the economic importance of gymnosperms?

    A: Gymnosperms are widely used in construction, furniture-building, paper-making and urban planning, as well as providing important solvents for industrial and home use, cleaning agents, and food. Gymnosperms are plants that do not flower and instead produce bare seeds or cones, as with the familiar pine tree.
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  • What are the two main functions of roots?

    Q: What are the two main functions of roots?

    A: The two main functions of roots are to deliver water and nutrients to the plant or tree and provide an anchor that keeps the plant or tree in the soil. Roots are generally the first part of any plant that emerges during germination.
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  • What is the role of chlorophyll in photosynthesis?

    Q: What is the role of chlorophyll in photosynthesis?

    A: Chlorophyll is a pigment found in the chloroplasts of plants that absorbs the wavelengths of light required to convert water and carbon dioxide into chemical energy during photosynthesis. Molecules of chlorophyll are arranged around the photosystems embedded in the chloroplasts' thylakoid membranes. There can be several hundred chlorophyll molecules per photosystem.
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  • What are some examples of monocot seeds?

    Q: What are some examples of monocot seeds?

    A: Monocot seeds include garlic, onion, corn, rice, wheat, asparagus, lilies and orchids. These seeds are classified as monocots because they only have one cotyledon inside of their seeds.
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  • Why is sunlight needed for photosynthesis?

    Q: Why is sunlight needed for photosynthesis?

    A: Sunlight is needed for photosynthesis because the solar energy is what is converted to chemical energy by the plant's chloroplasts. This energy is necessary for the production of glucose, which provides usable energy for the plant.
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  • Why are plants called "producers"?

    Q: Why are plants called "producers"?

    A: Plants are called producers due to their ability to create complex biological compounds like glucose by processing carbon dioxide, sunlight and water. Plants also produce oxygen, contributing the atmosphere that all animals breathe. Producers are found at the base of every ecosystem in the world, providing the foundation of most complex life in the world.
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  • How do plants absorb carbon dioxide?

    Q: How do plants absorb carbon dioxide?

    A: Plants absorb carbon dioxide from the air, through the stomata present in their leaves. Stomata are small holes that are present in the underside of leaves.
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  • Why are leaves important to plants?

    Q: Why are leaves important to plants?

    A: Leaves are important because they are the primary source of photosynthesis, which is how plants feed themselves. Photosynthesis is the process of turning light energy into sugars, which plants need to survive, so leaves are very important to a plant's overall health and survival.
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  • Are mums poisonous?

    Q: Are mums poisonous?

    A: Chrysanthemums, or mums, can cause people to develop contact dermatitis and is toxic to dogs, cats, and horses. Contact dermatitis is a condition that results in red, sore, or inflamed skin.
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  • What is the scientific name for bamboo?

    Q: What is the scientific name for bamboo?

    A: There are many species of bamboo, and their scientific names include phyllostachys, bambusa, chusquea, borinda, fargesia and himalayacalmus. Other species are brachystachyum, chimonobambusa, dendrocalamus and schizostachyum.
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  • What is the function of chloroplasts?

    Q: What is the function of chloroplasts?

    A: The function of chloroplasts is to convert sunlight, water and carbon dioxide into food for the plant. Chloroplasts are energy organelles, and are present in all types of plants.
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  • What is needed for photosynthesis to occur?

    Q: What is needed for photosynthesis to occur?

    A: For photosynthesis to occur, plants need sunlight, water, carbon dioxide and chlorophyll. Through the process of photosynthesis plants convert light energy into chemical energy. They use this energy to make food which they store as sugars.
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