Which two examples show adaptations for plants growing in the desert?

1 answer:

4 0

there is no clear evidence about plants evolving in the desert, or fossils of any kind of cactus despite their distribution over a large area. But, scientists are of the opinion that they acquired specific attributes millions of years ago, as a response to the vastly changing climate and conditions.

-Desert plant root system

A typical desert plant has a deep root system, which is a specific physical mechanism. As the roots grow deep down the soil, they absorb soil water, which is then transported to the upper portions of the plant.

-Desert plant leaves

Bear small foliage with waxy surface to minimize transpiration (loss of water through stomatal pores), which in turn, helps to conserve water.

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Several innovations in body design have evolved in animals. Which of the following innovations are present in vertebrates?

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Vertebrates include all the species of subphylum Vertebrata, that is, chordates with vertebrates. With currently about 66000 species, the vertebrates shows the prodigious majority of the phylum Chordata. Vertebrates comprise of jawed vertebrates, like bony fishes and cartilaginous fishes, and jawless fishes.

A vertebrate refers to a species with a backbone. The majority of the vertebrates exhibit bilateral symmetry. Coelomate animals exhibit a body cavity known as coelom with a complete lining known as peritoneum obtained from mesoderm. The majority of the bilateral animals, like all the vertebrates, are coelomates.

Vertebrates show incremental growth, like the incremental lines in the dentine of teeth. The majority of the animals more composite than jellyfish and other Cnidarians are divided into two classes, that is, the deuterostomes and protostomes. The chordates that include all the vertebrates are deuterostomes.

Thus, bilateral symmetry, coelom, incremental growth, and deuterostome development are the innovations found in vertebrates.

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