Question

Which of the following kingdoms has no well-defined boundaries?
A. Monera
B. Protista
C. Fungi
D. Metaphyta and metazoan

Answer 1

According to classifications in biology- R.H Whittaker proposed five kingdom and six kingdom classifications. Kingdom classifications are an important aspect as to identify each and every organism belonging to each species. In five kingdoms classification includes- plantae, animalia, fungi, Protista and bacteria.

Complete answer:
Option A: Monera- Bacteria are the only members of the kingdom Monera. They are the most abundant microorganisms. Bacteria occur almost everywhere. It is the most easily found organism on earth.
Option A is not the correct answer.
Option B: Protista- Protista belongs to aquatic species and it does not contain any boundaries. It has a thin cell membrane just to provide protection from the external world. They have long cylindrical structures like the body.
Option B is the correct answer.
Option C: fungi- fungi are commonly the yeast used products growing in warm, mushy places or regions. The kind of fungi that are being used as a source of food are mushrooms. Lichens are the association of algae and fungi.
Option C is not the correct answer.
Option D: Metaphyta and metazoan- metaphyta are the plants which have appendages to get attached to the seafloor and metazoan are animals belonging to aqua species which get attached to metaphyta plants.
Option D is not the correct answer.

Therefore, Option B is the correct answer.

Note:
Bacteria are classified on the basis of morphology (i.e., according to their shapes). The spherical shape is called coccus, rod shaped is bacilli, spiral shaped is called spirillum. Plasmids are found in bacteria bodies and they perform resistance in them. Plasmid lies in other eukaryotic organisms too. Used in many experiments as it contains the resistance power against diseases.