Answer:
<em>Monocot stems have scattered vascular tissue, whereas eudicots stems have vascular tissue arranged in a ring.</em>
Explanation:
Both monocots and eudicots belong to the plant's sub-division known as angiosperms. However, there are four distinguishing features between the two:
- Monocots have single cotyledons or seed leaves while eudicots have two.
- Monocots usually produce needle-like leaves with parallel veination while eudicots produce broad leaves with net veination.
- Root system in monocots is usually a tap root while it is fibrous root in eudicots.
- Floral parts in monocots are usually in multiple of threes while they are in multiples of fours of fives in eudicots
- Vascular bundles in the stems of monocots are usually scattered about while they are arranged in ring-form in eudicots.
<em>Hence, the only true one among the statements is that monocots stems have scattered vascular tissue, whereas eudicots stems have vascular tissue arranged in a ring.</em>
Whales play an important part within the marine ecosystem, and if they were to disappear, the delicate balance of nature would be disrupted. According to Scitable, every time a whale dies, it leaves behind a carcass that provides food and vital nutrition for literally hundreds of marine life organisms. For instance, species of scavenger crustaceans and worms feast upon whale carcasses for sustenance.
Other species of fish, including sharks, also obtain food from a whale carcass. Without this bountiful source of food, certain parts of the ocean would cease to thrive.
Living whales also heavily contribute to the marine ecosystem in the form of whale feces. According to the Columbia Basin Fish and Wildlife News, a study found that whale feces is filled with rich nutrients that include nitrogen, which stimulates the growth of plants. Organisms, such as plankton, that feed the ocean food chain also benefit from tons of whale feces floating on the ocean's surface. The disappearance of this source of natural nitrogen is likely to have a negative effect on plant and food production.
An overpopulation of sea lions would quickly be evident as soon as the whales that prey on them vanished. Likewise, the economies of Canada and the United States would suffer from a lack of tourist dollars because whale watching is very popular.
