Under theme: Environment & Ecology
73 PYQs. Learn elimination tricks first, then attempt the questions below.
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Associate Golden Mahseer with its known status as a fish, often highlighted in conservation news.
Associate specific National Parks with their unique ecological features, like Valley of Flowers with alpine m…
In the grasslands, trees do not replace the grasses as a part of an ecological succession because of
The precipitation is so erratic that drought and fire prevent large forests from growing. - Grasses can survive fires because they grow from the bottom instead of the top. - Their stems can grow again after being burned off. - The soil of most grasslands is also too thin and dry for trees to survive.
146 min · −33% negative · explanations after submit
Mycorrhizal Biotechnology has been used in rehabilitating degraded sites because mycorrhiza enables the plants to -
1. Resist drought and increase absorptive area
2. Tolerate extremes of pH
3. Resist disease infestation
Select the correct answer using the codes given below:
Statement 1 is correct: Mycorrhizae: - Greatly increase the effective root surface area - Improve water absorption - Help plants withstand drought stress Statement 2 is correct: Mycorrhizal fungi help plants: - Grow in acidic or alkaline soils - Access nutrients even when pH reduces their availability Statement 3 is correct: Mycorrhizae offer bioprotection: - Compete with soil pathogens - Produce antibiotics - Strengthen plant immune responses
146 min · −33% negative · explanations after submit
Consider the following animals:
1. Sea cow
2. Sea horse
3. Sea lion
Which of the above is/are mammal/mammals?
Among marine creatures, the sea cow and sea lion are mammals, while the sea horse is a fish. 1. Sea Cow: The sea cow, a herbivorous marine mammal, resides in the Indian and Pacific Oceans, growing to 3m and weighing around 600kg. Sadly, it's vulnerable due to habitat degradation and hunting. 2. Sea Horse: The sea horse, a carnivorous marine fish, is found in shallow tropical waters. It grows to 35cm, weighs around 200g, and is vulnerable due to habitat damage and fishing. 3. Sea Lion: The sea lion, a carnivorous marine mammal, breeds on Pacific beaches. It grows to 2.5m, weighs around 350kg, and is Endangered.