Which is the correct order of plant succession in the example in the passage?
Giải bởi Vietjack
Đáp án đúng là: C
Giải thích:
Dựa vào câu: The first weeds and grasses that appear on a bare field, for example change the environment by shielding the soil from the direct sunlight. As these plants spread, the ground surface becomes cooler and moisture than it was originally. Thus, the environment at the ground surface has been changed. The new surface conditions favor the sprouting of shrubs. As shrubs grow, they kill the grasses by preventing light from reaching them and also build up the soil in the area. In addition, they attract animals that also enhance the soil. Pine seedlings soon take hold and as they grow, they in turn shade out the shrubs. They are not able to shade out oak and hickory seedlings, however, they have found the forest floor suitable.
Dịch: Ví dụ như những bụi cỏ đầu tiên xuất hiện trên một cánh đồng trống, thay đổi môi trường bằng cách che chắn đất khỏi ánh sáng mặt trời trực tiếp. Khi những cây này lan rộng, bề mặt đất trở nên mát hơn và ẩm hơn so với ban đầu. Do đó, môi trường ở bề mặt đất đã bị thay đổi. Các điều kiện bề mặt mới tạo điều kiện cho sự nảy mầm của cây bụi. Khi cây bụi phát triển, chúng giết chết cỏ bằng cách ngăn ánh sáng chiếu tới chúng và cũng làm bồi tụ đất trong khu vực. Ngoài ra, chúng còn thu hút các loài động vật cũng có tác dụng cải tạo đất. Các cây thông con sẽ sớm bám trụ và khi lớn lên, chúng sẽ tỏa bóng mát ra các bụi cây. Chúng không thể che bóng cây sồi và cây con có gai, tuy nhiên, họ nhận thấy nền rừng thích hợp.
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Do you happen to know ?
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