Ecologists examined the role of competition for below ground resources (water and nutrients) in the dispersion pattern of trees in the Acacia savannas of South Africa. The figure below depicts […]
Tag: CSIR NET Life Science PYQ and Solution Species Interactions
CSIR NET Life Science PYQ and Solution Species Interactions
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CSIR NET Life Science Previous Year Questions and Solution on Ecology
How Allelopathy Shapes Tree Dispersion: Why Uniform Patterns Emerge
46. A tree species has leaves that contain an allelochemical compound that leaches into the soil and prevents the growth of its own seedlings. What kind of dispersion pattern is […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Ants and Plant Hoppers: A Classic Example of Multitrophic Interaction in Nature
A researcher observed ants in contact with plant hoppers that were feeding on tree sap. Which of the following conclusions made by her would be correct? (1) This is an […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Matching Ecological Interactions: Understanding the Correct Relationships
The following information refers to ecological interactions. Which one of the following options represents the correct match between column X and column Y? (1) A-(ii), B-(i), C-(iii), D-(iv) (2) A-(iv), […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Understanding the Relationship Between Probability of Death and Duration of Species Association: Identifying A, B, C, and D
The following matrix shows the relationship between probability of death and duration of species association. In the above, A, B, C and D are: (1) A – Parasites, B – […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Host-Parasite Relationships: Are There More Parasite Species Than Host Species?
Consider the following assumptions i. All known living organisms possess parasites ii. A single host species can harbor more then one type of parasites iii. Parasites are species specific From […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Cattle Egret and Grazing Cow: A Classic Example of Commensalism in Grasslands
In grasslands, cattle egrets follows grazing cows. Cow during grazing exposes insects from grasses to egrets. This is an example of (1) Commensalisms (2) parasitism (3) Amensalism (4) Mutualism In […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Why Are High-Altitude Forbs Flowering Earlier but Producing Fewer Fruits? Climate Change, Pollinator Mismatch, and Competition
In a high-altitude meadow region, it was observed that over the last five years 20 forb species flowered 2-3 weeks earlier than their long-term average time of flowering. At the […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Why Do Pollinators Visit Blue Flowers With No Nectar? The Role of Visual Cues and Floral Mimicry
A plant with blue-coloured flowers was observed to attract a large number of pollinators. However, these flowers were not producing any nectar. Which of the following can be a logical […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Why Red Tubular Odorless Flowers Are Perfect for Bird Pollination
A red coloured tubular flower without any odour is most likely to be pollinated by (1) beetles. (2) bees. (3) butterflies. (4) birds. Understanding Pollination Syndromes Flowering plants have evolved […]
