Quiz_Plantae

Explanation:Red rot of sugarcane is a fungal disease caused by Colletotrichum falcatum. It is a major disease affecting sugarcane crops, leading to significant yield losses.

Explanation:Necrosis is the death of plant cells or tissues, often resulting in dark, dead areas on leaves, stems, or other parts of the plant. It can be caused by various factors including pathogens and environmental stress.

Explanation:Banana bunchy top is caused by the Banana bunchy top virus (BBTV). This virus leads to stunted growth and “bunchy” appearance of leaves, severely affecting the productivity of banana plants.

Explanation:Cryptogams are non-seed-bearing plants and include Thallophytes, Bryophytes, and Pteridophytes. They reproduce by spores and do not produce flowers or seeds.

Explanation:The kingdom Plantae is characterized by organisms with rigid cell walls made of cellulose and the formation of embryos. These features distinguish them from other kingdoms like Protista, Monera, and Animalia.

Explanation:Sequoia sempervirens, also known as the coast redwood, is the tallest living gymnosperm tree in the world. These trees can reach heights of over 300 feet.

Explanation:Aflatoxins are toxic metabolites produced by certain species of Aspergillus fungi, particularly Aspergillus flavus and Aspergillus parasiticus.

MULTIPLE CHOICE QUESTIONS

Explanation:Tropical rainforests have the highest biodiversity of any terrestrial ecosystem. They provide a wide range of habitats and resources, supporting a vast array of species.

Explanation:Black rust of wheat, also known as stem rust, is caused by the fungus Puccinia graminis. It is a serious disease that affects wheat crops worldwide.

Explanation:Pathogenesis-related proteins, phytoalexins, and saponins are all substances that accumulate around infection sites in plants, playing a role in the plant’s defense mechanisms.