ECOSYSTEM CHAPTER 14 BIOLOGY


10 Questions MCQ Test | ECOSYSTEM CHAPTER 14 BIOLOGY


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This mock test of ECOSYSTEM CHAPTER 14 BIOLOGY for NEET helps you for every NEET entrance exam. This contains 10 Multiple Choice Questions for NEET ECOSYSTEM CHAPTER 14 BIOLOGY (mcq) to study with solutions a complete question bank. The solved questions answers in this ECOSYSTEM CHAPTER 14 BIOLOGY quiz give you a good mix of easy questions and tough questions. NEET students definitely take this ECOSYSTEM CHAPTER 14 BIOLOGY exercise for a better result in the exam. You can find other ECOSYSTEM CHAPTER 14 BIOLOGY extra questions, long questions & short questions for NEET on EduRev as well by searching above.
QUESTION: 1

Stratification is well developed in

Solution:
QUESTION: 2

Least productive ecosystem is

Solution: Least productive eco system is Tundra. Becoz it is very cold. environment of Tundra is very difficult for living organism. so there found very least amount of organisms. so that Tundra is least productive ecosystem.
QUESTION: 3

Which of the following are called as key industry animals?

Solution: Herbivore or primary consumer are the industry for carnivores and autotrophs are producer.
QUESTION: 4

Successful establishment of a new species in a new area

Solution: Ecesis: This is the successful establishment of migrated plant species into the new area. It includes germination of seeds or propagules, growth of seedlings and starting of reproduction by adult plants only a few immigrant propagules are capable of doing this under primitive hard conditions, and thus most of them disappear.
QUESTION: 5

Pyramid of number in a cropland ecosystem is

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QUESTION: 6

Mr. X is eating curd/yoghurt. For this food intake in a food chain he should be considered as occupying

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QUESTION: 7

In an area, a population with large sized individuals having long life Span, more parental care and slow development was present. The type of population growth curve will be

Solution: (a) This population growth curve will be S-shaped or sigmoid or logistic(chapter 13-12th ncert ).The growth curve has 5 phases - lag phase , positive acceleration phase, exponential phase, negative acceleration phase and stationary phase.for ex: human population shows S-shaped curve.
due to these 5 phases it shows these above characteristics.
QUESTION: 8

Desert can be converted into a lush green land by planting

Solution:

Psammophytes a plant that thrives in shifting sands, primarily in deserts. Psammophytes are marked by a number of adaptations that enable them to exist on wind-blown sands. In such an environment, the plants are often covered with sand, or their root system is exposed. It is also difficult for the seeds to germinate. Psammophytic trees and shrubs form strong adventitious roots on those parts of their trunks buried in the sand (Haloxylon persicum, Calligonum); adventitious buds and, then, shoots arise on the exposed roots (Ammondendron, Eremosparton, Smirnowia). Herbaceous psammophytes form underground shoots (Aristida) on long, fast-growing rhizomes that sprout through the sand (Carex areharia).
Many psammophytes are xerophytes and annual ephemerals. Perennial psammophytes have small, very reduced leaves or no leaves at all; photosynthesis and transpiration are accomplished by the stem (Haloxylon, Calligonum). The fruits have appendages in the shape of wings (Haloxylon), propellors (Ammondendron) or parachutes (Aristida) that enable them to move with the sand and to remain on the sand’s surface. After seed germination (usually in early spring), the roots grow very quickly, soon reaching a depth of approximately 0.5 m. At this depth, the sand remains moist until the onset of summer.
Psammophytes are encountered not only in deserts but also along seas and large lakes and in sands along rivers (Elymus giganteus, sand fescue, sharp-leaved willow). Psammophytes are often used to stabilize sandy soils.

QUESTION: 9

Secondary plant succession can occur after/on

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QUESTION: 10

The species which have a restricted distribution are called

Solution: