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Answer of The Effects of Light on Plant and Animals Species with Explanation

Answer of The effects of light on plant and animals species with Explanation is taken from IELTS Academic Reading: Cambridge 5, Reading Test 4: Passage 3 and is aimed for candidates who have major problems in finding IELTS Reading Answers.

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Answer of The effects of light on plant and animals species with Explanation is divided into three parts for your ease of navigating answer, passage, and questions, all at the same time.

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Answer of The effects of light on plant and animals species with Explanation

  • The answers appear in the same order in the text as the order of the statements
  • You don’t need to read the whole text. First, you will scan for keywords and then you’ll read in detail the section in which they’re located for the answer.
  • Underline the key words in first two question. Why first two questions? If you miss locating one, you need another to stop you and think, either you have missed it or it’s not given.
  • There will be at least one of each answer type – True, False, Not Given. So, if you don’t have at least one of each when you’ve completed the question, you’ve made a mistake.
  •  Identify any words that qualify the statement, for example, some, all, mainly, often, always and occasionally. These words are there to test if you have read the whole statement because they can change the meaning. For example, ‘Coca-Cola has always made its drinks in the U.S.A.’ has a different meaning from ‘Coca-Cola has mainly made its drinks in the U.S.A.’
  • The statements won’t be a word-for-word match to the information in the text. They will contain synonyms and paraphrasing. It’s the meaning that you are trying to match.
  • Remember that at least one answer will be NG. This means that you will be searching for information that is not there.
  • Don’t answer based on your assumptions
  • If you can’t find the information you are looking for, then it is probably ‘not given’. Don’t waste time looking for something that is not there.
  • If you have no idea what the answer is put ‘not given’. You probably have no idea because the answer is not there.
  • Don’t write yes for True, No for false.
27 truescientific evidence, support, photoperiodismPara 2, line 5Scan for the keywords and synonym keywords: experimental evidence = scientific evidence, considerable = plenty of.

Now read this line,”The seasonal impact of day length on physiological responses is called photoperiodism, and the amount of experimental evidence for this phenomenon is considerable. .. .. .”

The amount of experimental evidence for this phenomenon is considerable means There is plenty of scientific evidence to support photoperiodism.
28 truebird, encouraged, breed out of seasonPara 2, line 7Now read this line, “For example, some species of birds’ breeding can be induced even in midwinter simply by increasing day length artificially (Wolfson 1964)”

Here, some species of birds = some types of bird, induced = encouraged, even in midwinter = out of season.
29 not givenPhotoperiodism, restricted, certain geographic areas,There is no information of any geographical restriction of photoperiodism.
30 falsedesert annuals, examples, long-day plants,Para 4, last lineNow read this line, “For example, desert annuals germinate, flower and seed whenever suitable rainfall occurs, regardless of the day length.”

Meaning that desert annuals are examples of day-neutral plants, NOT long-day plants.
31 falsebamboos, flower, several times, during, life cyclePara 5Now read this “Bamboos are perennial grasses that remain in a vegetative state for many years and then suddenly flower, fruit and die (Evans 1976). … ..”

Which mean that Bamboos flower only once in their life, then die
32 trueChusquea abietifolia’s seasonal rhythmpara 5Now read this line, “The climatic trigger for this flowering cycle is not yet known, but the adaptive significance is clear.”

Here this flowering cycle mean Chusquea abietifolia’s seasonal rhythm and not known yet implies that Scientists have yet to determine.
33 falseEastern hemlock, fast-growing plantLast paraNow read these lines, “1. Shade-tolerant plants have lower photosynthetic rates  and hence have lower growth rates than those of shade-intolerant species”, and “2. For example, eastern hemlock seedlings are shade-tolerant.”

It means that As eastern hemlock is shade-tolerant plant, it has lower growth rate (slow-growing plant).
34 temperaturesday length, useful cue, unpredictable,Para 2, line 2Now read this line, “Day length is an excellent cue, because it provides a perfectly predictable pattern of change within the year. In the temperate zone in spring, temperatures fluctuate greatly from day to day, but day length increases steadily by a predictable amount.

What are unpredictable?
temperatures fluctuate greatly from day to day. Here,fluctuate greatly from day to day = unpredictable.
35 day-neutral (plants)plants, do not respond, light levelsPara 2Now read this line, “Plants which flower after a period of vegetative growth,  regardless of photo-period, are known as day-neutral plants”

Here, regardless means do not respond and known as means referred to as.
36 (adequate) food (resources)   birds, temperature climates, associate, longer days, nestingPara 3, line 4Now read this line, “Thus many temperate-zone birds use the increasing day lengths in spring as a cue to begin the nesting cycle, because this is a point when adequate food resources will be assured.”

 adequate food resources will be assured means that the availability of adequate food resources
37 fertilization/fertilisation by insectsplants, flower, days are long, often, depend on,Para 4, line 3Now read this line, “Long-day plants are adapted for situations that require fertilization by insects, or a long period of seed ripening”

require fertilization by insects means depends on (fertilization/fertilisation by) insect
38 rainfalldesert annuals, respond, as a signal, reproductionPara 4Keywords for the question: ,      
The answer can be found in the last lines paragraph no. 4, “For example, desert annuals germinate, flower and seed whenever suitable rainfall occurs, regardless of the day length”

Means that desert annuals respond to suitable rainfall.
39 sugarcanephotosynthetic rate, plantsPara 6, last linesNow read this line, ” Some plants reach maximum photosynthesis at one quarter full sunlight, and others, like sugarcane, never reach maximum, but continue to increase photosynthesis rate as light intensity rises.”

Here, like sugarcane means such as sugarcane.   
40 classificationplants in forestry and horticulture,Now read this line, “Plants in general can be divided into two groups: shade-tolerant species and shade-intolerant species. This classification is commonly used in forestry and horticulture.”

Here, the classification is done based on whether they can tolerate shade or not: shade-tolerant species and shade-intolerant species.

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