The answer is A. They produce food by photosynthesis.
The function of leaves is taken on by stems of such cacti.
Answer:
The non-photosynthetic parts of the plant include any parts that lack chlorophyll, such as the roots, woody stems, fruits, and seeds. These parts of the plant do not contain chlorophyll, and thus are unable to capture light energy from the Sun. They rely on photosynthetic parts of the plant, such as the leaves and parts of the stem to do photosynthesis. In vascular plants, the nutrients produced during photosynthesis are transported to non-photosynthetic parts of the plant through the phloem. Phloem is a vascular tissue designed to transport glucose and other nutrients produced during photosynthesis to parts of the plant that are non-photosynthetic, such as the roots.
Explanation:
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Answer:
The correct answer is D. Umbilical cord
Explanation:
The umbilical cord connects the fetus to the placenta and through it exchanges nutritional substances as well as oxygen-rich blood. The umbilical cord is maintained throughout gestation until the moment of birth, when it is cut and leaves a permanent scar, the navel. The umbilical cord is responsible for breathing and feeding the fetus until the moment it is born, so any failure or blockage in the circulation of oxygen and nutrients through the cord can lead to injury or even death of the embryo. It also serves to remove waste and carbon dioxide (CO2).
Answer:
Common to all plant species, the cell wall is the tough outer coat that protects the plant cell. The cell wall is mostly carbohydrate‐based, comprising three major classes of polysaccharides: cellulose, hemicellulose and pectin. There are also important structural proteins as well as phenolic and aliphatic polymers.
Explanation:
Answer:
the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by product
