C matter can not be created nor destroyed
Answer:
gram and peas
Explanation:
The endosperm is not present in all given mature seeds except gram and peas.
Answer:
1.Energy unidirectionally flows through an ecosystem, whereas matter generally cycles within an ecosystem.
Explanation:
In an ecosystem, energy from the organisms of one trophic level to that of next occurs by the process of feeding. The flow of energy follows a unidirectional path which means that energy from producers is carried to the primary consumers, secondary consumers and so on. It does not flow in reverse direction (from consumers to producers).
On the other hand, matter such as carbon, nitrogen, phosphorus, etc. are cycled via various biogeochemical cycles. For instance, plants intake carbon from the air in the form of CO2 and form organic nutrients. These organic nutrients carry the carbon from plants to herbivores and then to the consumers of higher trophic levels. However, when plants and consumers die, the carbon present in their tissues is decomposed and is released back to the surroundings. In this way, the carbon cycle cycles carbon in an ecosystem.
Answer:
A) the lymphatic system only carries fluid away from tissues.
Explanation:
More differences between lymphatic system and circulatory system are:
• Circulatory system consists of a network of blood vessels through which blood is pumped by a “pump” called heart. In lymphatic system there is no such thing as a pump (only lymphatic vessels and lymph nodes)
• Lymph capillaries are closed on one side, so lymph does not circulate, but only drains to reach veins .
• Circulatory system has different role than lymphatic system: it tranports oxygen and other gases, nutrients and hormones, but also wastes that need to be excreted. On the other hand, lymphatic system has a role in immune system, fat and vitamin absorption and transportation.