New Curriculum TOS LET | Majorship Science - Biology

All of the following were included in Woese's Kingdom Classification except?

• Monera

• Eubacteria

• Archaea

• Fungi

Answer explanation

Carl Woese 6 Kingdom System of Classification includes:

• Kingdom Protista

• Kingdom Archaea

• Kingdom Plantae

• Kingdom Animalia

• Kingdom Fungi

• Kingdom Eubacteria

Which plant division or phylum lacks food and water conducting vessels (vascular bundles) such as xylem and phloem?

• Angiosperms

• Gymnosperms

• Pteridophytes

• Bryophytes

Answer explanation

Bryophytes are plants which lacks vascular bundles such as xylem and phloem and do not have true roots.

Banana tree, Santan Flowers, and Plum (duhat) tree are all collectively belongs to?

• Coniferophyta

• Pteridophyta

• Bryophyta

• Angiospermophyta

Answer explanation

Angiospermophyta or simply angiosperms are those plant groups which are flower and fruit-bearing plants. They are said to be the most dominant plant division among all others

The following are characteristics of monocots except which one?

• scattered vascular bundles

• flowers are in the multiples of 3

• leaves have parallel venation

• their roots are tap roots

Answer explanation

Angiosperms have 2 subdivisions namely: Monocots and Dicots. Monocots are characterized as:

• only one seed leaf inside the seed coat

• leaves have parallel venation

• vascular bundles are scattered

• flower parts are in the multiples of 3

Ferns which are oftentimes used as one of the recipes in making vegetable salads can be categorized into what plant division?

• Lycopodophyta

• Bryophyta

• Filicinophyta

• Coniferophyta

Answer explanation

Division Filicinophyta or Pteridophyta is the plant division mostly occupied by the ferns. They reproduce through spores or sporangia which are found underneath in their leaves arranged in clusters called sori.

Which among the following is not the characteristics of dicots?

• they have fibrous roots

• they have tap roots

• their leaves have netted venation

• their vascular bundles are arranged in rings

Answer explanation

Angiosperms have 2 subdivisions namely Monocots and Dicots. Dicots are characterized as:

• having two seed leaves inside the seed coat

• have netted/reticulate venation

• vascular bundles are arranged in rings

• flowers are in the multiples of 4 or 5

• they have tap roots

Coconut tree, banana tree, and palay rice are all examples of?

• Angiosperms - Monocots

• Angiosperms - Dicots

• Gymnosperms - Dicots

• Gymnosperms- Monocots

Answer explanation

Angiosperms have 2 subdivisions namely Monocots and Dicots. Dicots are characterized as:

• having two seed leaves inside the seed coat

• have netted/reticulate venation

• vascular bundles are arranged in rings

• flowers are in the multiples of 4 or 5

• they have tap roots

The following belongs to the division Bryophyta of plants except _______?

• Ferns

• Liverworts

• Mosses

• Hornworts

Answer explanation

Ferns are classified under the division Pteridophyta or Filicinophyta in which they reproduce through spores found underneath their leaves arranged in clusters called sori. However, those plants under the division Bryophyta which lacks vascular bundles such as xylem and phloem in which they reproduce through a series of plant alternating phases of haploid and diploid phases.

Which among the following does the negative feedback of homeostasis works LEAST?

• Perspiration during intense workout

• Shivering in extreme cold

• Mother having childbirth

• Lowering fever due to the administration of medications

Answer explanation

Negative feedback works by regulating the body's extreme conditions into equilibrium. All of the options depicts negative feedback except the mother having a childbirth. On the positive feedback, the body continues to release and however intensify those extreme conditions which is the reverse of the negative feedback.

Choose the right taxon to where the crabs, shrimps, and lobsters belongs.

• Domain Eukarya - Kingdom Animalia - Phylum Porifera - Class Arachnida

• Domain Prokarya - Kingdom Animalia - Phylum Echinodermata - Class Hexactinellida

• Domain Eukarya - Kingdom Animalia - Phylum Arthropoda - Class Crustaceans

• Domain Eukarya - Kingdom Animalia - Phylum Chordata - Class Urochordata

Answer explanation

Shrimps, crabs, and lobsters are properly classified as:

Domain Eukarya: has membrane-bound organelles, multicellular organisms

Kingdom Animalia: obviously animals

Phylum Arthropoda: has jointed legs and appendages

Class Crustacea: aquatic animals, has 10 appendage or pairs of legs, undergoes ecdysis