Some flowers are bilaterally symmetrical or zygomorphic or mono-symmetric as in these flowers only possible to draw a single line of symmetry through them. Whereas some flowers are radially symmetrical or actinomorphic or poly-symmetric. In them, many lines of symmetry can be drawn. Besides, some flowers are asymmetrical.
Orchid flowers show extreme bilateral symmetry. In Daisy flowers head or capitulum is radially symmetrical capitulum and ray florets are bilateral symmetry. Rose flower is radially symmetrical and <em>Wisteria</em> flowers are bilaterally symmetrical.
Answer:
CARBON CYCLE; it refers to the circulation/recycling of carbon!
Answer: b. the output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.
Explanation:
In the negative feedback loop, the feedback reduces the excessive response of the stimulus for example regulation of body temperature, and control of blood glucose level. In the positive feedback loop, the response of a stimulus is intensified. Example, positive feedback is the childbirth and blood clotting. According to the negative feedback loop the output of the system keeps the internal body environment constant with respect to the changes in the external environment hence, maintains the homeostasis.
Answer:
Igneous rocks are the cooling and hardening of magma or lava and sedimentary rock is made of sediment cemented together
Explanation:
The three types of rock are igneous, metamorphic and sedimentary. Igneous rock is formed by the cooling and hardening of magma and lava. Examples include granite and basalt. Metamorphic rock is formed when other rocks are exposed to high heat and pressure, causing a chemical change in the rock. Examples include marble and gneiss. Sedimentary rock is formed when sediment is cemented together by minerals. Examples include sandstone and limestone.
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