31.

Which one of the following human organs is often called the “graveyard” of RBCs?

• Gall bladder

• kidney

• Spleen

• Spleen

Vascular bundles in monocotyledons are considered closed because

• a bundle sheath surrounds each bundle

• cambium is absent

• there are no vessels with perforations

• there are no vessels with perforations

• Allium

• Sesbania

• Petunia

• Petunia

A major characteristic of the monocot root is the presence of

• Open vascular bundles

• Scattered vascular bundles

• Vasculature without cambium

• Vasculature without cambium

Perigynous flowers are found in

• guava

• cucumber

• China rose

• China rose

Leaves become modified into spines in

• Opuntia

• pea

• onion

• onion

True nucleus is absent in 

• Anabaena

• Mucor

• Vaucheria

• Vaucheria

Which one of the following is not an inclusion body found in prokaryotes?

• Phosphate granule

• Cyanophycean granule

• Glycogen granule

• Glycogen granule

Transpiration and root pressure cause water to rise in plant by?

• pulling it upward

• pulling and pushing it, respectively

• pulling it upward

• pulling it upward

Minerals known to be required in large amounts for plant growth include

• phosphorus, potassium, sulphur, calcium

• calcium, magnesium, manganese, copper

• potassium, phosphorus, selenium, boron

• potassium, phosphorus, selenium, boron