Question

find the odd man out: pteris vitata, rice, Indian mustard, sunflower.​

Answer 1

The odd one out or Strange is rice:

• Rice grass seeds Oryza sativa (Asian rice) or usually Oryza glaberrima (African rice).

• The name wild rice is commonly used for the Zizania and Porteresia varieties, both wild and domestic, although the name may also be used for the older or uncultivated varieties of Oryza.

• Like cereals, farmed rice is a staple food consumed by more than half the world's population, especially in Asia and Africa.

• It is the third-largest agricultural product in the world, after sugarcane and maize.

• Since large portions of sugarcane and maize crops are used for non-human consumption, rice is the most important food crop in terms of human nutrition and calorie intake, providing more than one-fifth of the calories consumed by humans worldwide.

• There are many varieties of rice and cooking preferences often vary by region.

Answer 2

The odd one out of the following is Rice

BIOREMEDIATION:

Bioremediation is the use of living organisms like bacteria, fungi, plants, and other organisms for the removal of pollutants. It is a sub-branch under the subject of biotechnology.

Organisms Employed for Bioremediation

• Some of the organisms used in the bioremediation work by employing metals and organic compounds in their life machinery.  Pteris vittata a fern, pteridophyte, is an organism used in Phytoremediation. It can absorb arsenic from the soil.
• Genetically modified Brassicaceae members like Indian mustard can absorb the heavy metal Selenium. Hence it can be used to overcome heavy metal toxicity.
• The Asteraceae member sunflower can absorb uranium and arsenic. Therefore this can be used for the problem of heavy metal toxicity and also overcome radioactivity trace problems.

Hence, except for rice, all the other plants are very much useful in phytoremediation. Rice is a major cereal crop of the world, but it isn't used in bioremediation.