Identify the pollinators for the flowers with following pollination syndromes A. Flowers dull colored, located away from foliage, floral parts turgid, B. Flowers bright red, crowded, turgid, neclar watery and […]
Tag: CSIR NET Life Science PYQ and Solution Species Interactions
CSIR NET Life Science PYQ and Solution Species Interactions
No posts found.
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Pollination Syndromes: Identifying Plants Visited by Bats and Sunbirds
36. A plant is visited by bats during the night and sunbirds during the day. Given this information, which of the following characters best match this plant? (1) The plant […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Types of Prey Defense Mechanisms: Matching Strategies and Species
Following are the main types of defense employed by prey species against predators Types of defense: Chemical with aposematic coloration (A); Cryptic coloration (B); Batesian mimicry (C); Intimidation display (D) […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
How Flowering Traits Affect Seed Set: The Impact of Mutations in Unisexual Plant Species
A plant species with unisexual flowers has the following traits: floral longevity = 12 hours, pollen: ovule = 10:1, male and female flowers with synchronized anthesis. Given these, which of […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Matching State-Space Graphs to Ecological Modifications in the Lotka-Volterra Predator Isocline
Incorporating additional ecological factors into the Lotka-Voltera predator-prey model can change the predator isocline. Given below are three state-space graphsA-C) representing modification of predator isocline due to the ecological factors […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Three species M, N and O when grown independently in a laboratory, showed typical logistic growth curves. However, when grown in pairs, the following growth curves were observed. What interpretation […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
How Refuges Affect Prey Survival: The Didinium–Paramecium Predator-Prey Experiment
To understand prey-predator relationship, Didinium(predator) and Paramecium (prey) were used. Paramecium population was grown with sand sediment as hiding place or refuge. To this population, Didiniumwas introduced only once. What […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Why Do Green Plants Persist Despite Heavy Herbivore Pressure? Exploring the Success of Plants on a Green Earth
Nearly 25% of all insect species are known to be herbivores. Yet, in spite of such heavy herbivore pressure, globally green plants tend to persist, contributing to a green earth”. […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
Plant Vigor Hypothesis: Why Herbivores Prefer Fast-Growing Plants
Which of the following statements is correct according to the plant vigor hypothesis dealing with herbivore- plant interaction? (1) Herbivores prefer to attack slow growing stressed plants which produce leaves […]
CSIR NET Life Science Previous Year Questions and Solution on Ecology
When Do Predators Prefer Smaller Prey? Insights from Optimal Foraging Theory
Consider predators with a choice between two prey types: a big prey 1 which has energy value E1, handling time h1, and search time S1 and; a small prey 2 […]
